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, 0] (2294)
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A130123 → reverse
1 · 2 · 4 · 8 … row sums 1, 2, 4, 8, 16, 32, 64, 128, …
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A133080 → basis A008277
1 · 2, 1 · 1, 3, 1 · 2, 10, 7, 1 … row sums 1, 3, 5, 20, 52, 255, 877, 5017, …
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Triangle of Sulanke numbers: T(n,k) = T(n,k-1) + a(n-1,k) for n+k even and a(n,k) = a(n,k-1) + 2*a(n-1,k) for n+k odd.
1, 3, 2 · 1, 5, 8, 4 · 1, 6, 13, 12, 4 … row sums 6, 18, 36, 108, 216, 648, 1296, 3888, …
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A358735 → basis A008277
1 · 2, 1 · 7, 10, 2 · 33, 100, 52, 6 … row sums 1, 3, 19, 191, 2779, 55247, 1436433, …
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A125662 → basis A013610
1 · 4, 3 · 15, 24, 9 · 56, 138, 108, 27 … row sums 1, 7, 48, 329, 2255, 15456, 105937, …
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A111125 → D+1
1 · 4, 1 · 10, 7, 1 · 21, 28, 10, 1 … row sums 1, 5, 18, 60, 191, 589, 1775, 5257, …
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A152830 → basis A008277
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 3, 3, 3, 3, …
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A011973 → basis A007318 → θ+1
1 · 1 · 2, 2 · 3, 4 … row sums 1, 1, 4, 7, 18, 37, 84, 179, …
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A113413 → basis A008277
1 · 3, 1 · 7, 7, 1 · 17, 33, 12, 1 … row sums 1, 4, 15, 63, 288, 1427, 7605, 43314, …
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A114656 → basis A013610
1 · 3, 3 · 11, 24, 9 · 45, 153, 135, 27 … row sums 1, 6, 44, 360, 3152, 28896, 273856, …
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A099093 → θ+1
1 · 0, 6 · 0, 6, 27 · 0, 0, 54, 108 … row sums 1, 6, 33, 162, 756, 3402, 14931, 64314, …
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A344565 → Veronese 2 (j=1)
15 · 90 · 315, 105 · 840, 840 … row sums 0, 15, 90, 420, 1680, 6048, 20160, …
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A225470 → basis A013610
1 · 3, 3 · 18, 27, 9 · 162, 297, 162, 27 … row sums 1, 6, 54, 648, 9720, 174960, 3674160, …
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A274498 → θ+1
1 · 3 · 3, 12 · 9, 36 … row sums 1, 3, 15, 45, 189, 567, 2187, 6561, …
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A249248 → x ↦ x+1
1 · 4, 3 · 11, 13, 3 · 38, 65, 31, 3 … row sums 1, 7, 27, 137, 681, 3687, 20595, …
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A391045: Triangle read by rows: T(n,k) = binomial(n+1,k+1)*binomial(2*n-k+1,k)/(n+1), 0<=k<=n.
A172431 → ⊙ C(n,k+1) (shift -1)1 · 1, 1 · 1, 4, 1 · 1, 9, 10, 1 … row sums 1, 2, 6, 21, 80, 322, 1347, 5798, …
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A172431 → basis A008277
1 · 3, 2 · 8, 13, 3 · 21, 64, 34, 4 … row sums 1, 5, 24, 123, 682, 4079, 26159, …
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A249251 → basis A013610
1 · 4, 9 · 13, 54, 54 · 43, 261, 513, 324 … row sums 1, 13, 121, 1141, 10753, 101341, …
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basis-map coefficients of A297191, shifted → basis A013609
1 · 1, 4, 4 · 1, 8, 24, 32, 16 … row sums 1, 9, 81, 729, 6561, 59049, 531441, …
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A188440 → Veronese 2
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 5, 5, 13, 13, …
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Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*7^j.
144, 168, 49 · 1728, 3024, 1764, 343 … row sums 361, 6859, 130321, 2476099, 47045881, …
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A085478 → basis A008277
1 · 1 · 2, 1 · 5, 6, 1 … row sums 1, 1, 3, 12, 53, 253, 1297, 7103, …
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A091044 → ⊙ C(n+2,k+1) → D
1 · 5, 2 · 14, 28, 3 · 30, 168, 90, 4 … row sums 0, 1, 7, 45, 292, 1930, 12993, 88893, …
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A099097: Riordan array (1, 3+x).
1 · 0, 3 · 0, 1, 9 · 0, 0, 6, 27 … row sums 1, 3, 10, 33, 109, 360, 1189, 3927, …
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A109692 → basis A008277
1 · 2, 1 · 8, 13, 3 · 48, 183, 113, 15 … row sums 1, 3, 24, 359, 8563, 295114, 13765813, …
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A249248 → basis A013609
1 · 4, 6 · 11, 26, 12 · 38, 130, 124, 24 … row sums 1, 10, 49, 316, 1999, 13684, 96715, …
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A062145 → reverse
1 · 4, 1 · 10, 10, 1 · 20, 45, 18, 1 … row sums 1, 5, 21, 84, 330, 1287, 5005, 19448, …
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A013610 → θ+1
1 · 1, 6 · 1, 12, 27 · 1, 18, 81, 108 … row sums 1, 7, 40, 208, 1024, 4864, 22528, …
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A081578 → D
1 · 5, 2 · 9, 18, 3 · 13, 66, 39, 4 … row sums 0, 1, 7, 30, 122, 455, 1641, 5740, …
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A060187 → γ
1 · 1 · 1, 4 · 1, 20 … row sums 1, 1, 5, 21, 153, 1209, 12285, 140589, …
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A178820 → basis A007318
1 · 8, 4 · 40, 40, 10 · 160, 240, 120, 20 … row sums 1, 12, 90, 540, 2835, 13608, 61236, …
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A145596 → D+1
1 · 4, 2 · 11, 14, 3 · 24, 60, 32, 4 … row sums 1, 6, 28, 120, 495, 2002, 8008, 31824, …
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A011973 → x ↦ x+2 (shift +1) → D
1 · 2 · 7, 2 · 16, 6 … row sums 0, 1, 2, 9, 22, 68, 174, 475, …
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A249248 → θ+1
1 · 1, 6 · 1, 14, 9 · 1, 24, 66, 12 … row sums 1, 7, 24, 103, 419, 1815, 7970, 36277, …
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A008971: Triangle read by rows: T(n,k) is the number of permutations of [n] with k increasing runs of length at least 2.
type_b_eulerian → γ (scale 1/4)1 · 1 · 1, 1 · 1, 5 … row sums 1, 1, 2, 6, 24, 120, 720, 5040, …
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basis-map coefficients of A297191, shifted → D+1
1 · 0, 2, 1 · 0, 0, 0, 4, 1 · 0, 0, 0, 0, 0, 6, 1 … row sums 1, 3, 5, 7, 9, 11, 13, 15, …
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A099040 → D
2 · 2, 8 · 0, 16, 24 · 0, 8, 72, 64 … row sums 0, 2, 10, 40, 144, 488, 1592, 5056, …
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A108838 → basis A013611
2 · 5, 8 · 14, 48, 32 · 42, 224, 336, 128 … row sums 2, 13, 94, 730, 5956, 50357, 437318, …
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A110441 → basis A008277
1 · 4, 1 · 14, 9, 1 · 48, 57, 15, 1 … row sums 1, 5, 24, 121, 647, 3668, 21997, …
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A026729 → Veronese 2
1 · 0, 1 · 0, 2 · 0, 1, 1 … row sums 1, 0, 1, 2, 2, 4, 7, 10, …
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A125662 → (θ+1)²
1 · 3, 4 · 8, 24, 9 · 21, 100, 81, 16 … row sums 1, 7, 41, 218, 1091, 5237, 24379, …
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A099040 → D+1
1 · 2, 2 · 2, 10, 4 · 0, 16, 32, 8 … row sums 1, 4, 16, 56, 188, 608, 1920, 5952, …
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A038220 → Veronese 2
1 · 3 · 9, 4 · 27, 36 … row sums 1, 3, 13, 63, 313, 1563, 7813, 39063, …
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basis-map coefficients of A scaled Hermite triangle.
0, 0, 1 · 0, 0, 0, 1 · 0, 0, 0, 0, 1 … row sums 1, 1, 1, 1, 1, 1, 1, 1, …
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A038327 → basis A008277
1 · 13, 1 · 169, 27, 1 · 2197, 547, 42, 1 … row sums 1, 14, 197, 2787, 39652, 567515, …
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A008955 → basis A013610
1 · 2, 3 · 10, 39, 36 · 100, 660, 1413, 972 … row sums 1, 5, 85, 3145, 204425, 20646925, …
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A147716 → basis A013611
1 · 15, 4 · 225, 120, 16 · 3375, 2700, 720, 64 … row sums 1, 19, 361, 6859, 130321, 2476099, …
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A038334 → basis A013610
400, 960, 576 · 8000, 28800, 34560, 13824 … row sums 1936, 85184, 3748096, 164916224, …
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A178822 → D+1
1 · 12, 6 · 63, 84, 21 · 224, 504, 336, 56 … row sums 1, 18, 168, 1120, 6048, 28224, 118272, …
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A137320: Coefficients of raising factorial polynomials, T(n,k) = [x^k] p(x, n) where p(x, n) = (m*x + n - 1)*p(x, n - 1) with p[x, 0] = 1, p[x, -1] = 0, p[x, 1] = m*x and m = 2. Triangle read by rows…
1 · 0, 2 · 0, 2, 4 · 0, 4, 12, 8 … row sums 1, 2, 6, 24, 120, 720, 5040, 40320, …