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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A094638 → basis A013609
1 · 2, 2 · 6, 14, 8 · 24, 92, 116, 48 … row sums 1, 4, 28, 280, 3640, 58240, 1106560, …
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A204420 → basis A013611
1 · 1, 4 · 9, 48, 48 · 225, 1380, 2160, 960 … row sums 1, 5, 105, 4725, 363825, 42567525, …
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A133080 → D
1 · 0, 2 · 0, 2, 3 · 0, 0, 0, 4 … row sums 0, 1, 2, 5, 4, 9, 6, 13, …
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A358735 → basis A013609
1 · 2, 2 · 7, 16, 8 · 33, 120, 136, 48 … row sums 1, 4, 31, 337, 4687, 79342, 1582153, …
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A344565 → θ+1
3 · 15, 30 · 45, 180, 135 · 105, 630, 945, 420 … row sums 3, 45, 360, 2100, 10080, 42336, 161280, …
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A196347 → γ
1 · 1 · 2 · 6 … row sums 1, 1, 2, 6, 24, 120, 720, 5040, …
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A134082: Triangle read by rows, (n-1) zeros followed by (2n, 1).
A023531 → 2D+11 · 2, 1 · 0, 4, 1 · 0, 0, 6, 1 … row sums 1, 3, 5, 7, 9, 11, 13, 15, …
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A038324 → basis A007318
1 · 21, 10 · 441, 420, 100 · 9261, 13230, 6300, 1000 … row sums 1, 31, 961, 29791, 923521, 28629151, …
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A033282: Triangle read by rows: T(n, k) is the number of diagonal dissections of a convex n-gon into k+1 regions.
1 · 1, 2 · 1, 5, 5 · 1, 9, 21, 14 … row sums 1, 3, 11, 45, 197, 903, 4279, 20793, …
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A059344 → ⊙ 1/k! (shift -1) → θ+1
1 · 1 · 1, 4 · 1, 12 … row sums 1, 1, 5, 13, 43, 131, 411, 1275, …
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A136572 → basis A008277
1 · 1, 1 · 2, 6, 2 · 6, 42, 36, 6 … row sums 1, 2, 10, 90, 1248, 24360, 631440, …
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A054142: Triangular array binomial(2*n-k, k), k=0..n, n >= 0.
1 · 1, 1 · 1, 3, 1 · 1, 5, 6, 1 … row sums 1, 2, 5, 13, 34, 89, 233, 610, …
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A023531 → (1/2)D²+2D+1 → D+1
1 · 3, 1 · 5, 6, 1 · 3, 15, 9, 1 … row sums 1, 4, 12, 28, 55, 96, 154, 232, …
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A161198 → basis A013609
1 · 3, 4 · 15, 32, 16 · 105, 284, 240, 64 … row sums 1, 7, 63, 693, 9009, 135135, 2297295, …
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A102547 → reverse
0, 1 · 0, 0, 1 · 0, 0, 0, 1 · 0, 0, 0, 1, 1 … row sums 1, 1, 1, 2, 3, 4, 6, 9, …
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A088996 → basis A007318
1 · 1, 1 · 3, 5, 2 · 15, 34, 25, 6 … row sums 1, 2, 10, 80, 880, 12320, 209440, …
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A111125 → x ↦ x+1
1 · 4, 1 · 11, 7, 1 · 29, 31, 10, 1 … row sums 1, 5, 19, 71, 265, 989, 3691, 13775, …
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A152842 → x ↦ x+1
1 · 4, 3 · 8, 10, 3 · 32, 64, 42, 9 … row sums 1, 7, 21, 147, 441, 3087, 9261, 64827, …
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A038255 → basis A013610
1 · 7, 3 · 49, 42, 9 · 343, 441, 189, 27 … row sums 1, 10, 100, 1000, 10000, 100000, …
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A100862 → θ+1
1 · 1, 2 · 1, 6, 3 · 1, 12, 18, 4 … row sums 1, 3, 10, 35, 129, 497, 1996, 8325, …
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A038338 → basis A013610
576, 1728, 1296 · 13824, 62208, 93312, 46656 … row sums 3600, 216000, 12960000, 777600000, …
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basis-map coefficients of A030528, shifted → reverse
1 · -1 · 1 · -1 … row sums 1, -1, 1, -1, 1, -1, 1, -1, …
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delannoy → (θ+1)²
1 · 1, 4 · 1, 12, 9 · 1, 20, 45, 16 … row sums 1, 5, 22, 82, 283, 923, 2892, 8788, …
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A023531 → 2D+1 → (θ+1)²
1 · 2, 4 · 0, 16, 9 · 0, 0, 54, 16 … row sums 1, 6, 25, 70, 153, 286, 481, 750, …
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Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*8^j.
144, 192, 64 · 1728, 3456, 2304, 512 … row sums 400, 8000, 160000, 3200000, 64000000, …
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A152198 → D
1 · 1 · 2, 2 · 2, 2 … row sums 0, 0, 1, 1, 4, 4, 12, 12, …
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A038331 → basis A013609
289, 340, 100 · 4913, 8670, 5100, 1000 … row sums 729, 19683, 531441, 14348907, …
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A133080 → (θ+1)²
1 · 1, 4 · 0, 0, 9 · 0, 0, 9, 16 … row sums 1, 5, 9, 25, 25, 61, 49, 113, …
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A100861 → θ+1
1 · 1 · 1, 2 · 1, 6 … row sums 1, 1, 3, 7, 22, 66, 226, 778, …
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A172431 → θ+1
1 · 1, 4 · 1, 8, 9 · 1, 12, 30, 16 … row sums 1, 5, 18, 59, 185, 564, 1685, 4957, …
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A063007 → D
2 · 6, 12 · 12, 60, 60 · 20, 180, 420, 280 … row sums 0, 2, 18, 132, 900, 5910, 37926, …
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A274496 → Veronese 2 (j=1)
2 · 4 · 8 · 16 … row sums 0, 0, 2, 4, 8, 16, 32, 64, …
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A173018 → reverse (shift +1) → (θ+1)²
1 · 0, 4 · 0, 4, 9 · 0, 4, 36, 16 … row sums 1, 4, 13, 56, 304, 1980, 15000, 129360, …
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A081582 → Veronese 2
1 · 1 · 1, 1 · 1, 17 … row sums 1, 1, 2, 18, 99, 275, 900, 4068, …
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A133087 → basis A013609
1 · 3, 2 · 4, 8, 4 · 12, 32, 28, 8 … row sums 1, 5, 16, 80, 256, 1280, 4096, 20480, …
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A081582 → γ
1 · 1 · 1, 7 · 1, 14 … row sums 1, 1, 8, 15, 71, 176, 673, 1905, …
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A133214 → basis A007318
13, 16, 4 · 63, 114, 60, 8 · 321, 768, 624, 192, 16 … row sums 33, 245, 1921, 15525, 127905, 1067925, …
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A078812 → reverse
1 · 1, 2 · 1, 4, 3 · 1, 6, 10, 4 … row sums 1, 3, 8, 21, 55, 144, 377, 987, …
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A118933 → basis A013610
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 25, 121, 361, 841, …
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A081579 → D
1 · 6, 2 · 11, 22, 3 · 16, 92, 48, 4 … row sums 0, 1, 8, 36, 160, 640, 2496, 9408, …
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A113413 → D
1 · 4, 2 · 8, 12, 3 · 12, 36, 24, 4 … row sums 0, 1, 6, 23, 76, 233, 682, 1935, …
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A172431 → D
2 · 4, 6 · 6, 20, 12 · 8, 42, 60, 20 … row sums 0, 2, 10, 38, 130, 420, 1308, 3970, …
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A116414 → Veronese 2 (j=1)
1 · 8 · 42, 1 · 184, 16 … row sums 0, 1, 8, 43, 200, 880, 3800, 16333, …
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A011973 → x ↦ x+2 (shift +1) → Veronese 2
1 · 3 · 5 · 11, 1 … row sums 1, 3, 5, 12, 24, 55, 119, 271, …
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A008955 → basis A007318
1 · 2, 1 · 10, 13, 4 · 100, 220, 157, 36 … row sums 1, 3, 27, 513, 16929, 863379, 63026667, …
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A038255 → basis A013609
1 · 7, 2 · 49, 28, 4 · 343, 294, 84, 8 … row sums 1, 9, 81, 729, 6561, 59049, 531441, …
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A013610: Triangle of coefficients in expansion of (1+3*x)^n.
1 · 1, 3 · 1, 6, 9 · 1, 9, 27, 27 … row sums 1, 4, 16, 64, 256, 1024, 4096, 16384, …
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A100861 → basis A013609
1 · 1 · 2, 2 · 4, 6 … row sums 1, 1, 4, 10, 46, 166, 856, 3844, …
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A091042 → Veronese 2
1 · 1 · 1, 5 · 1, 35 … row sums 1, 1, 6, 36, 136, 496, 2016, 8256, …
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Triangle T(n, k) = coefficients of ( t(n, x) ) where t(n, x) = (1-x)^(n+1)*p(n, x)/x, p(n, x) = x*D( p(n-1, x) ), with p(1, x) = x/(1-x)^2, p(2, x) = x*(1+x)/(1-x)^3, and p(3, x) = x*(1+10*x+x^2)/(1-…
1, 10, 1 · 1, 23, 23, 1 · 1, 50, 138, 50, 1 … row sums 12, 48, 240, 1440, 10080, 80640, …