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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A013611 → basis A013611
1 · 5, 16 · 25, 160, 256 · 125, 1200, 3840, 4096 … row sums 1, 21, 441, 9261, 194481, 4084101, …
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A007318 → (θ+1)² → D
4 · 8, 18 · 12, 54, 48 · 16, 108, 192, 100 … row sums 0, 4, 26, 114, 416, 1360, 4128, 11872, …
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A038328 → basis A008277
196, 60, 4 · 2744, 1352, 192, 8 … row sums 260, 4296, 72256, 1238368, 21646912, …
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A137320 → reverse
1 · 2 · 4, 2 · 8, 12, 4 … row sums 1, 2, 6, 24, 120, 720, 5040, 40320, …
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A100861 → (θ+1)²
1 · 1 · 1, 4 · 1, 12 … row sums 1, 1, 5, 13, 52, 176, 706, 2710, …
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A126216 → D
1 · 5, 2 · 21, 18, 3 · 84, 112, 42, 4 … row sums 0, 1, 7, 42, 242, 1375, 7773, 43876, …
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A007318 → θ+1 → D+1
1 · 3, 2 · 5, 10, 3 · 7, 24, 21, 4 … row sums 1, 5, 18, 56, 160, 432, 1120, 2816, …
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basis-map coefficients of A026729 → basis A013610
1 · 1, 3 · 1, 6, 9 · 1, 9, 27, 27 … row sums 1, 4, 16, 64, 256, 1024, 4096, 16384, …
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A102547 → x ↦ (1/27)x → basis A013610
1 · 3 · 9 · 28, 3 … row sums 1, 3, 9, 31, 105, 351, 1177, 3951, …
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A111125 → Veronese 2 (j=1)
1 · 5 · 14, 1 · 30, 9 … row sums 0, 1, 5, 15, 39, 100, 260, 681, …
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A152830: Triangle read by rows, A007318 rows repeated four times .
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 2, 2, 2, 2, …
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A249252 → basis A013610
1 · 5, 12 · 17, 72, 72 · 61, 372, 720, 432 … row sums 1, 17, 161, 1585, 15553, 152657, …
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A130534 → θ+1
1 · 1, 2 · 2, 6, 3 · 6, 22, 18, 4 … row sums 1, 3, 11, 50, 274, 1764, 13068, 109584, …
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A078812 → D+1
1 · 3, 1 · 7, 6, 1 · 14, 22, 9, 1 … row sums 1, 4, 14, 46, 145, 444, 1331, 3926, …
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A135838 → x ↦ x+1
1 · 4, 2 · 8, 8, 2 · 32, 48, 24, 4 … row sums 1, 6, 18, 108, 324, 1944, 5832, 34992, …
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A062196 → reverse
1 · 3, 1 · 6, 8, 1 · 10, 30, 15, 1 … row sums 1, 4, 15, 56, 210, 792, 3003, 11440, …
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basis-map coefficients of A021012 → Veronese 2 (j=1)
-1 · 0, -6 · 0, 0, -120 · 0, 0, 0, -5040 … row sums 0, -1, 0, -6, 0, -120, 0, -5040, …
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A113214 → θ+1
1 · 2, 2 · 0, 6, 3 · 0, 4, 12, 4 … row sums 1, 4, 9, 20, 40, 78, 147, 272, …
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A038220 → basis A007318
1 · 5, 2 · 25, 20, 4 · 125, 150, 60, 8 … row sums 1, 7, 49, 343, 2401, 16807, 117649, …
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A334218: Triangle read by rows: T(n,k) is the number of permutations of 1..n arranged in a circle with exactly k descents.
1 · 1 · 0, 2 · 0, 3, 3 … row sums 1, 1, 2, 6, 24, 120, 720, 5040, …
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basis-map coefficients of A026729, shifted → D+1
1 · -1, -1 · 0, 2, 1 · 0, 0, -3, -1 … row sums 1, -2, 3, -4, 5, -6, 7, -8, …
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A169803 → basis A013611
1 · 2, 4 · 3, 8 · 5, 20, 16 … row sums 1, 6, 11, 41, 96, 301, 781, 2286, …
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A038243 → basis A013611
1 · 6, 4 · 36, 48, 16 · 216, 432, 288, 64 … row sums 1, 10, 100, 1000, 10000, 100000, …
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A038207 → basis A008277
1 · 3, 1 · 9, 7, 1 · 27, 37, 12, 1 … row sums 1, 4, 17, 77, 372, 1915, 10481, 60814, …
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A038226 → basis A013610
121, 528, 576 · 1331, 8712, 19008, 13824 … row sums 1225, 42875, 1500625, 52521875, …
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A038281 → basis A013610
121, 198, 81 · 1331, 3267, 2673, 729 … row sums 400, 8000, 160000, 3200000, 64000000, …
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A152198: Triangle read by rows, A007318 rows repeated.
1 · 1 · 1, 1 · 1, 1 … row sums 1, 1, 2, 2, 4, 4, 8, 8, …
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A318772 → x ↦ (1/243)x → basis A013610
1 · 3 · 9 · 27 … row sums 1, 3, 9, 27, 85, 267, 837, 2619, …
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A136572 → basis A013610
1 · 1, 3 · 2, 12, 18 · 6, 54, 162, 162 … row sums 1, 4, 32, 384, 6144, 122880, 2949120, …
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A027465 → basis A008277
1 · 4, 1 · 16, 9, 1 · 64, 61, 15, 1 … row sums 1, 5, 26, 141, 799, 4736, 29371, …
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A028326 → basis A007318
2 · 4, 2 · 8, 8, 2 · 16, 24, 12, 2 … row sums 2, 6, 18, 54, 162, 486, 1458, 4374, …
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A290319: Triangle read by rows: T(n, k) is the Sheffer triangle ((1 - 4*x)^(-1/4), (-1/4)*log(1 - 4*x)). A generalized Stirling1 triangle.
1 · 1, 1 · 5, 6, 1 · 45, 59, 15, 1 … row sums 1, 2, 12, 120, 1680, 30240, 665280, …
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A257609: Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 2*x + 2.
1 · 2, 2 · 4, 16, 4 · 8, 88, 88, 8 … row sums 1, 4, 24, 192, 1920, 23040, 322560, …
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A023531 → (1/2)D²+2D+1 → θ+1
1 · 2, 2 · 1, 8, 3 · 0, 6, 18, 4 … row sums 1, 4, 12, 28, 55, 96, 154, 232, …
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delannoy → Veronese 2 (j=1)
1 · 3 · 5, 1 · 7, 7 … row sums 0, 1, 3, 6, 14, 35, 85, 204, …
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A266213 → basis A013610
1 · 1 · 3, 6 · 7, 24, 18 … row sums 1, 1, 9, 49, 281, 1601, 9129, 52049, …
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A118394 → basis A008277
1 · 1 · 1 · 7, 6 … row sums 1, 1, 1, 13, 49, 121, 2041, 13021, …
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A122542 → D
1 · 2, 2 · 2, 8, 3 · 2, 16, 18, 4 … row sums 0, 1, 4, 13, 40, 117, 332, 921, …
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A007318 → D → D
2 · 6, 6 · 12, 24, 12 · 20, 60, 60, 20 … row sums 0, 0, 2, 12, 48, 160, 480, 1344, …
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A034870 → (θ+1)²
1 · 1, 8, 9 · 1, 16, 54, 64, 25 … row sums 1, 18, 160, 1120, 6912, 39424, 212992, …
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A100862 → basis A013610
1 · 2, 3 · 5, 15, 9 · 14, 63, 81, 27 … row sums 1, 5, 29, 185, 1273, 9325, 72085, …
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A145597 → basis A007318
1 · 6, 3 · 27, 27, 6 · 110, 165, 75, 10 … row sums 1, 9, 60, 360, 2061, 11529, 63728, …
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A103633 → basis A013611
1 · 1, 4 · 2, 12, 16 · 2, 20, 64, 64 … row sums 1, 5, 30, 150, 900, 4500, 27000, …
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A114655 → reverse
2 · 2, 4 · 2, 12, 8 · 2, 24, 48, 16 … row sums 2, 6, 22, 90, 394, 1806, 8558, 41586, …
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A103633 → D+1
1 · 1, 1 · 1, 3, 1 · 0, 2, 4, 1 … row sums 1, 2, 5, 7, 16, 20, 44, 52, …
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A152842 → Veronese 2 (j=1)
3 · 4 · 7, 9 · 8, 24 … row sums 0, 3, 4, 16, 32, 128, 256, 1024, …
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A059473 → x ↦ x+1
1 · 4, 2 · 18, 18, 4 · 80, 120, 56, 8 … row sums 1, 6, 40, 264, 1744, 11520, 76096, …
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A152830 → basis A013609
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 4, 4, 4, 4, …
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A106800 → θ+1
1 · 1 · 1, 2 · 1, 6, 3 … row sums 1, 1, 3, 10, 38, 161, 747, 3753, …
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Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*3^j.
100, 60, 9 · 1000, 900, 270, 27 … row sums 169, 2197, 28561, 371293, 4826809, …