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)
-
A120909 → (θ+1)²
3 · 3, 24 · 3, 48, 108 · 3, 72, 324, 384 … row sums 3, 27, 159, 783, 3483, 14499, 57591, …
-
A023531 → 2D+1+2n → reverse
1 · 3, 2 · 5, 4 · 7, 6 … row sums 1, 5, 9, 13, 17, 21, 25, 29, …
-
A154228 → basis A007318
1 · 2, 1 · 18, 18, 1 · 96, 144, 50, 1 … row sums 1, 3, 37, 291, 4943, 67791, 1587413, …
-
A272867 → basis A007318
1 · 6, 6, 1 · 36, 72, 48, 12, 1 … row sums 1, 13, 169, 2197, 28561, 371293, …
-
A081582 → basis A013609
1 · 2, 2 · 11, 22, 4 · 36, 108, 80, 8 … row sums 1, 4, 37, 232, 1705, 11692, 82573, …
-
A110441 → basis A013611
1 · 4, 4 · 14, 32, 16 · 48, 176, 192, 64 … row sums 1, 8, 62, 480, 3716, 28768, 222712, …
-
A046716 → basis A008277
1 · 2, 1 · 5, 6, 1 · 16, 37, 14, 1 … row sums 1, 3, 12, 68, 578, 7412, 136468, …
-
delannoy → basis A013610
1 · 2, 3 · 5, 15, 9 · 12, 54, 72, 27 … row sums 1, 5, 29, 165, 941, 5365, 30589, …
-
A249251 → basis A007318
1 · 4, 3 · 13, 18, 6 · 43, 87, 57, 12 … row sums 1, 7, 37, 199, 1069, 5743, 30853, …
-
A123519 → (θ+1)²
1, 24, 36 · 1, 48, 180, 128 · 1, 80, 540, 896, 400 … row sums 61, 357, 1917, 9717, 47249, 222633, …
-
A103633: Triangle read by rows: triangle of repeated stepped binomial coefficients.
1 · 0, 1 · 0, 1, 1 · 0, 0, 1, 1 … row sums 1, 1, 2, 2, 4, 4, 8, 8, …
-
A207824 → basis A008277
1 · 6, 1 · 35, 13, 1 · 204, 125, 21, 1 … row sums 1, 7, 49, 351, 2578, 19439, 150631, …
-
A085881 → basis A013610
1 · 2, 3 · 12, 36, 27 · 120, 540, 810, 405 … row sums 1, 5, 75, 1875, 65625, 2953125, …
-
delannoy → θ+1
1 · 1, 2 · 1, 6, 3 · 1, 10, 15, 4 … row sums 1, 3, 10, 30, 87, 245, 676, 1836, …
-
A063967 → θ+1
1 · 1, 2 · 2, 6, 3 · 3, 14, 15, 4 … row sums 1, 3, 11, 36, 116, 364, 1124, 3424, …
-
A113214 → basis A008277
1 · 3, 1 · 4, 6, 1 · 7, 21, 10, 1 … row sums 1, 4, 11, 39, 152, 660, 3131, 16078, …
-
A038279: Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*1^j.
1 · 8, 1 · 64, 16, 1 · 512, 192, 24, 1 … row sums 1, 9, 81, 729, 6561, 59049, 531441, …
-
A144445 → γ
1 · 1 · 1, 21 · 1, 203 … row sums 1, 1, 22, 204, 4663, 106548, 3404962, …
-
A110441 → reverse
1 · 1, 3 · 1, 6, 7 · 1, 9, 23, 15 … row sums 1, 4, 14, 48, 164, 560, 1912, 6528, …
-
A113214 → Veronese 2 (j=1)
1 · 3 · 2, 1 · 0, 5 … row sums 0, 1, 3, 3, 5, 10, 14, 23, …
-
A266213 → Veronese 2 (j=1)
2 · 4 · 6, 2 · 8, 12 … row sums 0, 0, 2, 4, 8, 20, 50, 120, …
-
A249248 → reverse
1 · 3, 1 · 3, 7, 1 · 3, 22, 12, 1 … row sums 1, 4, 11, 38, 131, 490, 1897, 7714, …
-
A334218 → θ+1
1 · 1 · 0, 4 · 0, 6, 9 … row sums 1, 1, 4, 15, 72, 420, 2880, 22680, …
-
A038231 → Veronese 2 (j=1)
1 · 8 · 48, 1 · 256, 16 … row sums 0, 1, 8, 49, 272, 1441, 7448, 37969, …
-
A135065: A127733 * A007318 as infinite lower triangular matrices.
A007318 → ×(1+2n+n²)1 · 4, 4 · 9, 18, 9 · 16, 48, 48, 16 … row sums 1, 8, 36, 128, 400, 1152, 3136, 8192, …
-
A100861 → basis A013611
1 · 1 · 2, 4 · 4, 12 … row sums 1, 1, 6, 16, 106, 426, 3076, 15856, …
-
A257607 → γ
1 · 5 · 25, 10 · 125, 160 … row sums 1, 5, 35, 285, 2655, 27465, 311715, …
-
A008292 → γ (scale 1/4) (shift +1) → θ+1
1 · 2 · 4, 4 · 8, 32 … row sums 1, 2, 8, 40, 240, 1680, 13440, 120960, …
-
A081577 → basis A013609
1 · 2, 2 · 6, 12, 4 · 16, 48, 40, 8 … row sums 1, 4, 22, 112, 580, 2992, 15448, 79744, …
-
A159854 → Veronese 2
0, 1 · 0, 1 · 0, 1, 1 · 0, 1, 3 … row sums 1, 1, 2, 4, 8, 16, 32, 64, …
-
A011973 → x ↦ x−1/4 → Veronese 2 (j=1)
4 · 16 · 40 · 80 … row sums 0, 0, 4, 16, 40, 80, 204, 736, …
-
A038271 → basis A013611
1 · 12, 20 · 144, 480, 400 · 1728, 8640, 14400, 8000 … row sums 1, 32, 1024, 32768, 1048576, 33554432, …
-
A038243 → basis A008277
1 · 6, 1 · 36, 13, 1 · 216, 127, 21, 1 … row sums 1, 7, 50, 365, 2727, 20878, 163967, …
-
A344565 → (θ+1)²
3 · 15, 60 · 45, 360, 405 · 105, 1260, 2835, 1680 … row sums 3, 75, 810, 5880, 33600, 163296, …
-
A288874: Row reversed version of triangle A201637 (second-order Eulerian triangle).
A201637 → reverse (shift +1)1 · 0, 1 · 0, 2, 1 · 0, 6, 8, 1 … row sums 1, 1, 3, 15, 105, 945, 10395, 135135, …
-
A130123 → Veronese 2
1 · 0, 4 · 0, 0, 16 · 0, 0, 0, 64 … row sums 1, 0, 4, 0, 16, 0, 64, 0, …
-
A085881 → γ
1 · 1 · 3 · 15 … row sums 1, 1, 3, 15, 105, 945, 10395, 135135, …
-
A367270 → basis A013609
1 · 1 · 3, 4 · 10, 24, 12 … row sums 1, 1, 7, 46, 307, 2086, 14374, 100108, …
-
basis-map coefficients of A026729, shifted → (θ+1)²
1 · 0, -4 · 0, 0, 9 · 0, 0, 0, -16 … row sums 1, -4, 9, -16, 25, -36, 49, -64, …
-
A274496 → θ+1
1 · 2 · 2, 4 · 4, 8 … row sums 1, 2, 6, 12, 32, 64, 160, 320, …
-
A010054: a(n) = 1 if n is a triangular number, otherwise 0.
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 1, 1, 1, 1, …
-
A122542 → basis A008277
1 · 1, 1 · 3, 5, 1 · 7, 21, 10, 1 … row sums 1, 2, 9, 39, 186, 953, 5225, 30484, …
-
A026729: Square array of binomial coefficients T(n,k) = binomial(n,k), n >= 0, k >= 0, read by downward antidiagonals.
1 · 0, 1 · 0, 1, 1 · 0, 0, 2, 1 … row sums 1, 1, 2, 3, 5, 8, 13, 21, …
-
A269947 → basis A008277
1 · 1, 1 · 2, 4, 1 · 18, 42, 15, 1 … row sums 1, 2, 7, 76, 2279, 152776, 19564357, …
-
A085841 → basis A013609
1 · 7, 8 · 61, 144, 64 · 547, 2008, 2112, 512 … row sums 1, 15, 269, 5179, 102105, 2028071, …
-
A391533 → x ↦ x+1
9, 6, 1 · 18, 21, 8, 1 · 36, 60, 37, 10, 1 … row sums 16, 48, 144, 432, 1296, 3888, 11664, …
-
A207824 → basis A013609
1 · 6, 2 · 35, 24, 4 · 204, 212, 72, 8 … row sums 1, 8, 63, 496, 3905, 30744, 242047, …
-
A091044 → ⊙ C(n+2,k+1) → D+1
1 · 2, 1 · 6, 7, 1 · 15, 42, 17, 1 … row sums 1, 3, 14, 75, 438, 2702, 17324, 114291, …
-
A081578 → θ+1
1 · 1, 2 · 1, 10, 3 · 1, 18, 27, 4 … row sums 1, 3, 14, 50, 183, 637, 2188, 7380, …
-
A007318 → basis A049020 → D+1
1 · 3, 1 · 10, 7, 1 · 37, 40, 12, 1 … row sums 1, 4, 18, 90, 494, 2946, 18926, 130066, …