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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A347823: Triangle read by rows: T(n,k) = (n+k+1)*binomial(n,k), 0 <= k <= n.
A007318 → θ+1+n1 · 2, 3 · 3, 8, 5 · 4, 15, 18, 7 … row sums 1, 5, 16, 44, 112, 272, 640, 1472, …
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A113953 → basis A007318
1 · 1, 1 · 3, 4, 1 · 5, 11, 7, 1 … row sums 1, 2, 8, 24, 80, 256, 832, 2688, …
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A038231 → Veronese 2
1 · 4 · 16, 1 · 64, 12 … row sums 1, 4, 17, 76, 353, 1684, 8177, 40156, …
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A099093 → reverse
1 · 3 · 9, 3 · 27, 18 … row sums 1, 3, 12, 45, 171, 648, 2457, 9315, …
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A178821 → D+1
1 · 10, 5 · 45, 60, 15 · 140, 315, 210, 35 … row sums 1, 15, 120, 700, 3360, 14112, 53760, …
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A088996 → basis A013611
1 · 1, 4 · 3, 20, 32 · 15, 136, 400, 384 … row sums 1, 5, 55, 935, 21505, 623645, 21827575, …
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A011973 → basis A013610
1 · 1 · 2, 3 · 3, 6 … row sums 1, 1, 5, 9, 29, 65, 181, 441, …
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A030528 → basis A013611
1 · 2, 4 · 3, 16, 16 · 5, 40, 96, 64 … row sums 1, 6, 35, 205, 1200, 7025, 41125, …
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A033282 → basis A008277
1 · 3, 2 · 11, 20, 5 · 45, 170, 105, 14 … row sums 1, 5, 36, 334, 3753, 49097, 728269, …
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A038336 → basis A013610
484, 1320, 900 · 10648, 43560, 59400, 27000 … row sums 2704, 140608, 7311616, 380204032, …
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A108838 → ⊙ C(n+2,k+1) (shift +2)
30, 120, 30 · 60, 600, 600, 60 … row sums 180, 1320, 9660, 70896, 522648, …
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A052553 → D
1 · 2 · 3, 2 · 4, 6 … row sums 0, 0, 1, 2, 5, 10, 20, 38, …
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A013620 → basis A007318
1 · 5, 3 · 25, 30, 9 · 125, 225, 135, 27 … row sums 1, 8, 64, 512, 4096, 32768, 262144, …
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A038208 → (θ+1)²
1 · 2, 8 · 4, 32, 36 · 8, 96, 216, 128 … row sums 1, 10, 72, 448, 2560, 13824, 71680, …
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A152198 → (θ+1)²
1 · 1 · 1, 4 · 1, 4 … row sums 1, 1, 5, 5, 18, 18, 56, 56, …
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A011973 → basis A007318 → (θ+1)²
1 · 1 · 2, 4 · 3, 8 … row sums 1, 1, 6, 11, 34, 75, 190, 435, …
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A143495 → reverse
1 · 1, 3 · 1, 7, 9 · 1, 12, 37, 27 … row sums 1, 4, 17, 77, 372, 1915, 10481, 60814, …
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A010054 → reverse → Veronese 2
1 · 0, 7 · 0, 0, 13 · 0, 0, 0, 19 … row sums 1, 0, 7, 0, 13, 0, 19, 0, …
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A249248 → basis A013610
1 · 4, 9 · 11, 39, 27 · 38, 195, 279, 81 … row sums 1, 13, 77, 593, 4505, 36757, 309925, …
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A086645 → Veronese 2 (j=1)
1 · 6 · 15, 1 · 28, 28 … row sums 0, 1, 6, 16, 56, 256, 1056, 4096, …
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A059473 → basis A008277
1 · 4, 2 · 18, 22, 4 · 80, 184, 80, 8 … row sums 1, 6, 44, 352, 3084, 29344, 300984, …
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A081577 → θ+1
1 · 1, 2 · 1, 8, 3 · 1, 14, 21, 4 … row sums 1, 3, 12, 40, 132, 420, 1312, 4032, …
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A108838 → ⊙ C(n+1,k+1) (shift +1) → θ+1
1 · 1, 2 · 1, 8, 3 · 1, 20, 30, 4 … row sums 1, 3, 12, 55, 276, 1477, 8296, 48393, …
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A120909 → D
6 · 12, 24 · 18, 72, 72 · 24, 144, 288, 192 … row sums 0, 6, 36, 162, 648, 2430, 8748, 30618, …
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A102365 → (θ+1)²
1 · 1 · 1, 4 · 1, 20, 9 … row sums 1, 1, 5, 30, 224, 2011, 21057, 251719, …
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A207823 → basis A013610
1 · 5, 3 · 24, 30, 9 · 115, 219, 135, 27 … row sums 1, 8, 63, 496, 3905, 30744, 242047, …
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A082985 → basis A013610
1 · 4, 9 · 11, 45, 45 · 29, 168, 315, 189 … row sums 1, 13, 101, 701, 4693, 31021, 204101, …
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A137320 → basis A013611
1 · 2, 8 · 6, 40, 64 · 24, 208, 576, 512 … row sums 1, 10, 110, 1320, 17160, 240240, …
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basis-map coefficients of A026729, shifted → basis A013609
1 · -1, -2 · 1, 4, 4 · -1, -6, -12, -8 … row sums 1, -3, 9, -27, 81, -243, 729, -2187, …
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A033282 → x ↦ x+1
1 · 3, 2 · 11, 15, 5 · 45, 93, 63, 14 … row sums 1, 5, 31, 215, 1597, 12425, 99955, …
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A123519 → basis A013611
11, 56, 64 · 41, 304, 704, 512 … row sums 131, 1561, 18601, 221651, 2641211, …
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A122431 → Veronese 2
1, 3 · 0, 3, 1 · 0, 1, 3 · 0, 0, 3, 1 … row sums 4, 4, 4, 4, 4, 4, 4, 4, …
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A100862: Triangle read by rows: T(n,k) is the number of k-matchings of the corona K'(n) of the complete graph K(n) and the complete graph K(1); in other words, K'(n) is the graph constructed from K(n…
1 · 1, 1 · 1, 3, 1 · 1, 6, 6, 1 … row sums 1, 2, 5, 14, 43, 142, 499, 1850, …
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A121574 → basis A008277
1 · 3, 1 · 10, 8, 1 · 33, 47, 14, 1 … row sums 1, 4, 19, 95, 506, 2862, 17143, 108398, …
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type_b_eulerian → γ (scale 1/4) → (θ+1)²
1 · 1 · 1, 4 · 1, 20 … row sums 1, 1, 5, 21, 118, 782, 6004, 52332, …
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A027465 → Veronese 2
1 · 3 · 9, 1 · 27, 9 … row sums 1, 3, 10, 36, 136, 528, 2080, 8256, …
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A030528 → basis A013609
1 · 2, 2 · 3, 8, 4 · 5, 20, 24, 8 … row sums 1, 4, 15, 57, 216, 819, 3105, 11772, …
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A188440 → D+1
1 · 1 · 3, 2 · 3, 2 … row sums 1, 1, 5, 5, 21, 21, 81, 81, …
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A038319 → basis A008277
256, 185, 25 · 4096, 5165, 1575, 125 … row sums 466, 10961, 273631, 7247476, 203358371, …
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A038338 → basis A008277
576, 720, 144 · 13824, 32832, 15552, 1728 … row sums 1440, 63936, 3131136, 167712768, …
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narayana → D+1
1 · 2, 1 · 4, 5, 1 · 7, 18, 9, 1 … row sums 1, 3, 10, 35, 126, 462, 1716, 6435, …
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A052553 → basis A013610
1 · 1 · 2, 3 · 3, 6 … row sums 1, 1, 5, 9, 29, 65, 181, 441, …
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A173018 → reverse (shift +1) → θ+1
1 · 0, 2 · 0, 2, 3 · 0, 2, 12, 4 … row sums 1, 2, 5, 18, 84, 480, 3240, 25200, …
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A099040 → basis A013610
1 · 2, 6 · 6, 30, 36 · 16, 120, 288, 216 … row sums 1, 8, 72, 640, 5696, 50688, 451072, …
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A028326: Twice Pascal's triangle A007318: T(n,k) = 2*C(n,k).
2 · 2, 2 · 2, 4, 2 · 2, 6, 6, 2 … row sums 2, 4, 8, 16, 32, 64, 128, 256, …
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A154986: Triangle T(n, k) = coefficients of p(x, n) where p(x,n) = (x+1)*p(x, n-1) + n*(n-1)*x*p(x, n-2), read by rows.
1 · 1, 1 · 1, 4, 1 · 1, 11, 11, 1 … row sums 1, 2, 6, 24, 120, 720, 5040, 40320, …
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A173018 → D
1 · 4, 2 · 11, 22, 3 · 26, 132, 78, 4 … row sums 0, 0, 1, 6, 36, 240, 1800, 15120, …
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A133087 → basis A013610
1 · 3, 3 · 4, 12, 9 · 12, 48, 63, 27 … row sums 1, 6, 25, 150, 625, 3750, 15625, 93750, …
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A099093 → basis A008277
1 · 3, 3 · 12, 30, 9 · 45, 243, 180, 27 … row sums 1, 6, 51, 495, 5472, 67392, 911655, …
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A055356 → D
1 · 4, 4 · 11, 36, 18 · 26, 196, 288, 96 … row sums 0, 0, 1, 8, 65, 606, 6527, 80364, …