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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A232535 → θ+1
1 · 1, 4 · 1, 16, 9 · 1, 36, 75, 16 … row sums 1, 5, 26, 128, 608, 2816, 12800, 57344, …
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A111125 → basis A013611
1 · 4, 4 · 11, 28, 16 · 29, 124, 160, 64 … row sums 1, 8, 55, 377, 2584, 17711, 121393, …
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A143683 → basis A013610
1 · 2, 3 · 12, 36, 9 · 40, 180, 198, 27 … row sums 1, 5, 57, 445, 4049, 34485, 301993, …
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A128099 → basis A008277
1 · 1 · 3, 2 · 5, 4 … row sums 1, 1, 5, 9, 33, 77, 261, 705, …
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A007318 → D → Veronese 2 (j=1)
2 · 6 · 12, 4 · 20, 20 … row sums 0, 0, 2, 6, 16, 40, 96, 224, …
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A038220 → (θ+1)²
1 · 3, 8 · 9, 48, 36 · 27, 216, 324, 128 … row sums 1, 11, 93, 695, 4825, 31875, 203125, …
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A318772 → basis A013610
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 13, 25, 37, 49, …
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A152842 → D
3 · 4, 6 · 7, 30, 27 · 8, 44, 72, 36 … row sums 0, 3, 10, 64, 160, 832, 1920, 9216, …
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A023531 → 2D+1+2n → Veronese 2 (j=1)
3 · 4 · 0, 7 · 0, 8 … row sums 0, 3, 4, 7, 8, 11, 12, 15, …
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A011973 → x ↦ x−1/4 → D
4 · 16 · 40, 32 · 80, 192 … row sums 0, 0, 4, 16, 72, 272, 1004, 3552, …
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A028326 → basis A013610
2 · 4, 6 · 8, 24, 18 · 16, 72, 108, 54 … row sums 2, 10, 50, 250, 1250, 6250, 31250, …
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A033282 → D
2 · 5, 10 · 9, 42, 42 · 14, 112, 252, 168 … row sums 0, 2, 15, 93, 546, 3140, 17901, 101675, …
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basis-map coefficients of A021012 → θ+1
1 · 0, -2 · 0, 0, 6 · 0, 0, 0, -24 … row sums 1, -2, 6, -24, 120, -720, 5040, -40320, …
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A154986 → D
1 · 4, 2 · 11, 22, 3 · 24, 140, 72, 4 … row sums 0, 1, 6, 36, 240, 1800, 15120, 141120, …
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A038338 → γ
144 · 1728 · 20736 · 248832 … row sums 144, 1728, 20736, 248832, 2985984, …
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A110441 → basis A013609
1 · 4, 2 · 14, 16, 4 · 48, 88, 48, 8 … row sums 1, 6, 34, 192, 1084, 6120, 34552, …
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A038281: Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*3^j.
64, 48, 9 · 512, 576, 216, 27 … row sums 121, 1331, 14641, 161051, 1771561, …
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basis-map coefficients of A026729, shifted → Veronese 2 (j=1)
-1 · 0, -1 · 0, 0, -1 · 0, 0, 0, -1 … row sums 0, -1, 0, -1, 0, -1, 0, -1, …
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A100862 → D
1 · 3, 2 · 6, 12, 3 · 10, 42, 30, 4 … row sums 0, 1, 5, 21, 86, 355, 1497, 6475, …
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A227450 → D
4 · 12, 16 · 28, 96, 48 · 60, 400, 480, 128 … row sums 0, 4, 28, 172, 1068, 6924, 47276, …
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A038303 → basis A013609
1 · 11, 2 · 121, 44, 4 · 1331, 726, 132, 8 … row sums 1, 13, 169, 2197, 28561, 371293, …
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A304236 → D
3 · 6 · 9, 18 · 12, 54 … row sums 0, 0, 3, 6, 27, 66, 204, 522, …
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A008292 → γ (shift +1) → (θ+1)²
1 · 1 · 1, 8 · 1, 32 … row sums 1, 1, 9, 33, 233, 1433, 11289, 92097, …
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A008459 → basis A013610
1 · 2, 3 · 6, 18, 9 · 20, 90, 108, 27 … row sums 1, 5, 33, 245, 1921, 15525, 127905, …
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A104684 → basis A007318
1 · 3, 1 · 13, 8, 1 · 63, 57, 15, 1 … row sums 1, 4, 22, 136, 886, 5944, 40636, …
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A318773: Triangle T(n,k) = 3*T(n-1,k) + T(n-4,k-1) for k = 0..floor(n/4), with T(0,0) = 1 and T(n,k) = 0 for n or k < 0, read by rows.
A318772 → x ↦ (1/243)x1 · 3 · 9 · 27 … row sums 1, 3, 9, 27, 82, 249, 756, 2295, …
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A008292 → γ (shift +1) → θ+1
1 · 1 · 1, 4 · 1, 16 … row sums 1, 1, 5, 17, 93, 513, 3477, 25569, …
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A126351 → D+1
1 · 3, 2 · 6, 13, 4 · 10, 47, 43, 8 … row sums 1, 5, 23, 108, 534, 2803, 15623, 92249, …
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A100861 → reverse → x ↦ x+1
1 · 1, 1 · 2, 3, 1 · 4, 9, 6, 1 … row sums 1, 2, 6, 20, 76, 312, 1384, 6512, …
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A085881 → basis A008277
1 · 2, 1 · 12, 15, 3 · 120, 285, 135, 15 … row sums 1, 3, 30, 555, 15855, 636930, 33918885, …
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A173018 → (θ+1)²
1 · 1 · 1, 4 · 1, 16, 9 … row sums 1, 1, 5, 26, 160, 1140, 9240, 84000, …
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A102547 → x ↦ (1/27)x → basis A013611
1 · 3 · 9 · 28, 4 … row sums 1, 3, 9, 32, 111, 378, 1294, 4437, …
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A132393 → (θ+1)²
1 · 0, 4 · 0, 4, 9 · 0, 8, 27, 16 … row sums 1, 4, 13, 51, 244, 1392, 9260, 70508, …
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A152198 → basis A008277
1 · 1 · 2, 1 · 2, 1 … row sums 1, 1, 3, 3, 10, 10, 37, 37, …
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A154228 → basis A013609
1 · 2, 2 · 18, 36, 4 · 96, 288, 200, 8 … row sums 1, 4, 58, 592, 11938, 209368, 5851432, …
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A007318 → 2θ+1 → Veronese 2 (j=1)
3 · 6 · 9, 7 · 12, 28 … row sums 0, 3, 6, 16, 40, 96, 224, 512, …
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A132393 → D+1
1 · 1, 1 · 1, 3, 1 · 2, 8, 6, 1 … row sums 1, 2, 5, 17, 74, 394, 2484, 18108, …
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A132393 → basis A013611
1 · 1, 4 · 2, 12, 16 · 6, 44, 96, 64 … row sums 1, 5, 30, 210, 1680, 15120, 151200, …
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A135838 → γ
1 · 2 · 2 · 4 … row sums 1, 2, 2, 4, 4, 8, 8, 16, …
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A128813 → basis A013611
1 · 2, 4 · 8, 40, 48 · 56, 472, 1296, 1152 … row sums 1, 6, 96, 2976, 151776, 11534976, …
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A116412 → basis A007318
1 · 4, 1 · 13, 8, 1 · 43, 42, 12, 1 … row sums 1, 5, 22, 98, 436, 1940, 8632, 38408, …
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A204420: Triangle T(n,k) giving number of degree-2n permutations which decompose into exactly k cycles of even length, k=0..n.
1 · 0, 1 · 0, 6, 3 · 0, 120, 90, 15 … row sums 1, 1, 9, 225, 11025, 893025, 108056025, …
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A028326 → Veronese 2
2 · 2 · 2, 2 · 2, 6 … row sums 2, 2, 4, 8, 16, 32, 64, 128, …
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A008292 → γ (shift +1) → D+1
1 · 1 · 3, 2 · 9, 8 … row sums 1, 1, 5, 17, 93, 513, 3477, 25569, …
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A011973 → (θ+1)²
1 · 1 · 1, 4 · 1, 8 … row sums 1, 1, 5, 9, 22, 44, 91, 179, …
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A062264 → θ+1
1 · 1, 10 · 1, 24, 45 · 1, 42, 189, 140 … row sums 1, 11, 70, 372, 1815, 8437, 38038, …
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A159854 → (θ+1)²
0, 0, 9 · 0, 0, 9, 16 · 0, 0, 9, 32, 25 … row sums 9, 25, 66, 168, 416, 1008, 2400, 5632, …
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A007318 → D → Veronese 2
1 · 2 · 3, 3 · 4, 12 … row sums 0, 1, 2, 6, 16, 40, 96, 224, …
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A137320 → D
2 · 2, 8 · 4, 24, 24 · 12, 88, 144, 64 … row sums 0, 2, 10, 52, 308, 2088, 16056, 138528, …
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A064861 → reverse
2, 3, 1 · 4, 8, 5, 1 · 4, 12, 13, 6, 1 … row sums 6, 18, 36, 108, 216, 648, 1296, 3888, …