Root regions
Nodes grouped by the interval that contains every root of every row (proved, for all n). A node can have several proved regions; the sharpest is the smallest interval.
Nodes with all roots in (-inf, +inf) (332)
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A038329 → Pₙ + Pₙ₊₁
1872, 1368, 333, 27 · 22464, 22032, 8100, 1323, 81 … row sums 3600, 54000, 810000, 12150000, …
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A085881 → Pₙ + Pₙ₊₁
2, 1 · 4, 7, 3 · 18, 51, 48, 15 … row sums 3, 14, 132, 1800, 31920, 695520, …
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A122076 → x ↦ x+1
2 · 5, 2 · 17, 12, 2 · 65, 66, 21, 2 … row sums 2, 7, 31, 154, 799, 4207, 22258, …
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A023531 → basis A341287 → Pₙ + Pₙ₊₁
1, 1 · -1, 2, 1 · -2, -1, 4, 1 · 1, -11, 4, 7, 1 … row sums 2, 2, 2, 2, 2, 2, 2, 2, …
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A035469 → Pₙ + Pₙ₊₁
5, 1 · 32, 13, 1 · 308, 172, 25, 1 … row sums 6, 46, 506, 7186, 124662, 2551086, …
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A144698 → Pₙ + Pₙ₊₁
2, 4 · 2, 17, 16 · 2, 45, 129, 64 … row sums 6, 35, 240, 1890, 16800, 166320, …
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A256890 → Pₙ + Pₙ₊₁
12, 64, 56, 8 · 24, 248, 468, 204, 16 … row sums 140, 960, 7560, 67200, 665280, 7257600, …
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A111577 → Pₙ + Pₙ₊₁
2, 1 · 2, 6, 1 · 2, 26, 13, 1 · 2, 106, 117, 23, 1 … row sums 3, 9, 42, 249, 1737, 13872, 124401, …
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A038271 → Pₙ + Pₙ₊₁
8, 5 · 56, 75, 25 · 392, 805, 550, 125 … row sums 13, 156, 1872, 22464, 269568, 3234816, …
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narayana
1 · 1, 1 · 1, 3, 1 · 1, 6, 6, 1 … row sums 1, 2, 5, 14, 42, 132, 429, 1430, …
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A038314 → Pₙ + Pₙ₊₁
1100, 3840, 4464, 1728 … row sums 11132, 244904, 5387888, 118533536, …
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A028326 → Pₙ + Pₙ₊₁
4, 2 · 4, 6, 2 · 4, 10, 8, 2 · 4, 14, 18, 10, 2 … row sums 6, 12, 24, 48, 96, 192, 384, 768, …
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A196347 → Pₙ + Pₙ₊₁
2, 1 · 3, 5, 2 · 8, 22, 20, 6 · 30, 114, 162, 102, 24 … row sums 3, 10, 56, 432, 4224, 49920, 691200, …
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A053122 → D+1
1 · -1, 1 · -1, -2, 1 · 6, -2, -3, 1 … row sums 1, 0, -2, 2, 1, -4, 3, 2, …
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A207823: Triangle of coefficients of Chebyshev's S(n,x+4) polynomials (exponents of x in increasing order).
1 · 4, 1 · 15, 8, 1 · 56, 46, 12, 1 … row sums 1, 5, 24, 115, 551, 2640, 12649, 60605, …
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A137338 → D+1
1 · 0, 1 · -3, -1, 1 · 9, -6, -3, 1 … row sums 1, 1, -3, 1, 13, -61, 223, -867, …
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A225470 → Pₙ + Pₙ₊₁
3, 1 · 12, 8, 1 · 90, 73, 16, 1 … row sums 4, 21, 180, 2106, 31104, 554040, …
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A111125: Triangle read by rows: T(k,s) = ((2*k+1)/(2*s+1))*binomial(k+s,2*s), 0 <= s <= k.
1 · 3, 1 · 5, 5, 1 · 7, 14, 7, 1 … row sums 1, 4, 11, 29, 76, 199, 521, 1364, …
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A094816: Triangle read by rows: T(n,k) are the coefficients of Charlier polynomials: A046716 transposed, for 0 <= k <= n.
1 · 1, 1 · 1, 3, 1 · 1, 8, 6, 1 … row sums 1, 2, 5, 16, 65, 326, 1957, 13700, …
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A142462 → Pₙ + Pₙ₊₁
2, 1 · 2, 17, 1 · 2, 159, 144, 1 … row sums 3, 20, 306, 6912, 205344, 7551360, …
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A207607: Triangle of coefficients of polynomials v(n,x) jointly generated with A207606; see Formula section.
1 · 1, 2 · 1, 5, 2 · 1, 9, 9, 2 … row sums 1, 3, 8, 21, 55, 144, 377, 987, …
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A038207 → Pₙ + Pₙ₊₁
3, 1 · 6, 5, 1 · 12, 16, 7, 1 · 24, 44, 30, 9, 1 … row sums 4, 12, 36, 108, 324, 972, 2916, 8748, …
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A049029 → Pₙ + Pₙ₊₁
6, 1 · 50, 16, 1 · 630, 270, 31, 1 … row sums 7, 67, 932, 16867, 374887, 9868532, …
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A038303 → Pₙ + Pₙ₊₁
11, 1 · 110, 21, 1 · 1100, 320, 31, 1 … row sums 12, 132, 1452, 15972, 175692, 1932612, …
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A257617 → Pₙ + Pₙ₊₁
3, 2 · 6, 38, 4 · 12, 424, 392, 8 … row sums 5, 48, 836, 20592, 653400, 25344000, …
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A053124: Triangle of coefficients of Chebyshev's U(n,2*x-1) polynomials (exponents of x in increasing order).
1 · -2, 4 · 3, -16, 16 · -4, 40, -96, 64 … row sums 1, 2, 3, 4, 5, 6, 7, 8, …
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A130534 → Pₙ + Pₙ₊₁
2, 1 · 3, 4, 1 · 8, 14, 7, 1 · 30, 61, 41, 11, 1 … row sums 3, 8, 30, 144, 840, 5760, 45360, …
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A136124 → Pₙ + Pₙ₊₁
3, 1 · 8, 6, 1 · 30, 31, 10, 1 · 144, 180, 80, 15, 1 … row sums 4, 15, 72, 420, 2880, 22680, 201600, …
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A124038 → D+1
1 · -1, 1 · -3, 0, 1 · 0, -6, 1, 1 … row sums 1, 0, -2, -4, -3, 2, 7, 6, …
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basis-map coefficients of Triangle read by rows, n>=1, 1<=k<=n, T(n,k) = k*binomial(n,k)^2/(n-k+1).
1 · 0, 2 · -3, 3, 3 · 0, -12, 12, 4 … row sums 1, 2, 3, 4, 5, 6, 7, 8, …
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A163626 → Pₙ + Pₙ₊₁
2, -1 · 2, -4, 2 · 2, -10, 14, -6 … row sums 1, 0, 0, 0, 0, 0, 0, 0, …
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A060920 → D+1
1 · 3, 1 · 10, 7, 1 · 33, 38, 12, 1 … row sums 1, 4, 18, 84, 390, 1784, 8042, 35804, …
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A257614 → Pₙ + Pₙ₊₁
3, 2 · 6, 30, 4 · 12, 272, 248, 8 … row sums 5, 40, 540, 10080, 239400, 6894720, …
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A257180 → Pₙ + Pₙ₊₁
36, 165, 150, 27 · 108, 867, 1551, 753, 81 … row sums 378, 3360, 33264, 362880, 4324320, …
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A257615 → Pₙ + Pₙ₊₁
6, 5 · 30, 75, 25 · 150, 785, 740, 125 … row sums 11, 130, 1800, 28560, 510720, 10160640, …
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A028338 → x ↦ 2x−5 → Pₙ + Pₙ₊₁
-1, 1 · 0, -2, 1 · 2, -1, -2, 1 · 0, 4, -4, -1, 1 … row sums 0, -1, 0, 0, 0, 0, 0, 0, …
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chebyshev_t → D+1
1 · 1, 1 · -1, 4, 2 · -3, -3, 12, 4 … row sums 1, 2, 5, 10, 17, 26, 37, 50, …
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A145596 → Pₙ + Pₙ₊₁
3, 2 · 5, 10, 3 · 7, 28, 23, 4 · 9, 60, 95, 44, 5 … row sums 5, 18, 62, 213, 737, 2574, 9074, 32266, …
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A038328 → Pₙ + Pₙ₊₁
1872, 912, 148, 8 · 22464, 14688, 3600, 392, 16 … row sums 2940, 41160, 576240, 8067360, …
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A225472 → Pₙ + Pₙ₊₁
3, 3 · 6, 24, 18 · 12, 138, 288, 162 … row sums 6, 48, 600, 10200, 218328, 5627928, …
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A063007: T(n,k) = binomial(n,k)*binomial(n+k,k), 0 <= k <= n, triangle read by rows.
1 · 1, 2 · 1, 6, 6 · 1, 12, 30, 20 … row sums 1, 3, 13, 63, 321, 1683, 8989, 48639, …
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A257621 → Pₙ + Pₙ₊₁
4, 3 · 12, 45, 9 · 36, 435, 402, 27 … row sums 7, 66, 900, 15960, 347760, 8981280, …
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A019538 → Pₙ + Pₙ₊₁
2, 2 · 2, 8, 6 · 2, 20, 42, 24 · 2, 44, 186, 264, 120 … row sums 4, 16, 88, 616, 5224, 51976, 593128, …
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A179900: Triangle T(n,k) read by rows: coefficient of [x^k] of the polynomial p_n(x)=(5-x)*p_{n-1}(x)-p_{n-2}(x), p_0=1, p_1=5-x.
1 · 5, -1 · 24, -10, 1 · 115, -73, 15, -1 … row sums 1, 4, 15, 56, 209, 780, 2911, 10864, …
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A075502 → Pₙ + Pₙ₊₁
392, 364, 43, 1 · 2744, 5488, 1267, 71, 1 … row sums 800, 9571, 134241, 2151648, 38484259, …
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A166343 → Pₙ + Pₙ₊₁
2, 39, 28, 1 · 2, 85, 189, 59, 1 … row sums 70, 336, 1960, 13440, 105840, 940800, …
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A120909 → Pₙ + Pₙ₊₁
6, 6 · 6, 18, 12 · 6, 30, 48, 24 … row sums 12, 36, 108, 324, 972, 2916, 8748, …
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A137338: Triangle read by rows: T(n,k), 0 <= k <= n, gives the coefficients of the Charlier polynomials (with parameter a=1), ordered by rising powers.
1 · -1, 1 · 0, -3, 1 · 3, 6, -6, 1 … row sums 1, 0, -2, 4, -4, -4, 44, -236, …
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A257609 → Pₙ + Pₙ₊₁
3, 2 · 6, 18, 4 · 12, 104, 92, 8 … row sums 5, 28, 216, 2112, 24960, 345600, …
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A038208 → Pₙ + Pₙ₊₁
3, 2 · 6, 10, 4 · 12, 32, 28, 8 · 24, 88, 120, 72, 16 … row sums 5, 20, 80, 320, 1280, 5120, 20480, …