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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A356546 → basis A013610
1 · 4, 6 · 24, 72, 54 · 160, 720, 1080, 540 … row sums 1, 10, 150, 2500, 43750, 787500, …
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A100861 → reverse → basis A008277
1 · 1, 1 · 2, 4, 1 · 4, 16, 9, 1 … row sums 1, 2, 7, 30, 157, 948, 6487, 49332, …
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A344565 → γ
3 · 15 · 45 · 105 … row sums 3, 15, 45, 105, 210, 378, 630, 990, …
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A038208 → Veronese 2 (j=1)
2 · 8 · 24, 8 · 64, 64 … row sums 0, 2, 8, 32, 128, 512, 2048, 8192, …
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A103327 → θ+1
1 · 3, 2 · 5, 20, 3 · 7, 70, 63, 4 … row sums 1, 5, 28, 144, 704, 3328, 15360, 69632, …
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A154227 → γ
1 · 1 · 1, 6 · 1, 16 … row sums 1, 1, 7, 17, 122, 479, 3895, 21139, …
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A317496 → basis A013609
1 · 1 · 1 · 4, 6 … row sums 1, 1, 1, 10, 19, 28, 118, 289, …
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A011973 → Veronese 2
1 · 1 · 1 · 1 … row sums 1, 1, 1, 1, 2, 4, 7, 11, …
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A358735 → basis A007318
1 · 2, 1 · 7, 8, 2 · 33, 60, 34, 6 … row sums 1, 3, 17, 133, 1313, 15623, 217409, …
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A120910 → basis A013611
3 · 9, 12 · 27, 72, 48 · 81, 324, 432, 192 … row sums 3, 21, 147, 1029, 7203, 50421, 352947, …
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A143683 → basis A013611
1 · 2, 4 · 12, 48, 16 · 40, 240, 352, 64 … row sums 1, 6, 76, 696, 7216, 71136, 715456, …
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A144439 → γ
1 · 1 · 1, 6 · 1, 28 … row sums 1, 1, 7, 29, 223, 1773, 18287, 210509, …
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A133214 → basis A013611
13, 64, 64 · 63, 456, 960, 512 … row sums 141, 1991, 29761, 460251, 7272861, …
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A038331 → basis A007318
289, 170, 25 · 4913, 4335, 1275, 125 … row sums 484, 10648, 234256, 5153632, 113379904, …
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A089627: T(n,k) = binomial(n,2*k)*binomial(2*k,k) for 0 <= k <= n, triangle read by rows.
A059344 → ⊙ 1/k! (shift -1)1 · 1 · 1, 2 · 1, 6 … row sums 1, 1, 3, 7, 19, 51, 141, 393, …
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A038321 → basis A013611
324, 1008, 784 · 5832, 27216, 42336, 21952 … row sums 2116, 97336, 4477456, 205962976, …
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A026729 → D+1
1 · 1, 1 · 1, 3, 1 · 0, 4, 5, 1 … row sums 1, 2, 5, 10, 20, 38, 71, 130, …
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A232535 → Veronese 2
1 · 1 · 1, 3 · 1, 25 … row sums 1, 1, 4, 26, 104, 376, 1504, 6176, …
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A121574 → (θ+1)²
1 · 2, 4 · 4, 20, 9 · 8, 64, 72, 16 … row sums 1, 6, 33, 160, 726, 3144, 13159, 53652, …
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A008288 → basis A013609
1 · 2, 2 · 5, 10, 4 · 12, 36, 32, 8 … row sums 1, 4, 19, 88, 409, 1900, 8827, 41008, …
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A038305 → basis A007318
169, 78, 9 · 2197, 1521, 351, 27 … row sums 256, 4096, 65536, 1048576, 16777216, …
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A054142 → reverse
1 · 1, 1 · 1, 3, 1 · 1, 6, 5, 1 … row sums 1, 2, 5, 13, 34, 89, 233, 610, …
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A091044 → (θ+1)²
1 · 2, 8 · 3, 40, 27 · 4, 112, 252, 64 … row sums 1, 10, 70, 432, 2464, 13312, 69120, …
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A100861 → D
1 · 3 · 6, 6 · 10, 30 … row sums 0, 0, 1, 3, 12, 40, 150, 546, …
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A207607 → D+1
1 · 3, 2 · 6, 9, 2 · 10, 27, 15, 2 … row sums 1, 5, 17, 54, 166, 499, 1475, 4303, …
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A169803 → θ+1
1 · 1, 2 · 1, 4 · 1, 6, 3 … row sums 1, 3, 5, 10, 18, 33, 59, 105, …
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A008288 → Veronese 2
1 · 1 · 1, 1 · 1, 5 … row sums 1, 1, 2, 6, 15, 35, 84, 204, …
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A111125 → basis A008277
1 · 4, 1 · 11, 8, 1 · 29, 42, 13, 1 … row sums 1, 5, 20, 85, 391, 1941, 10341, 58800, …
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A139548 → basis A007318
1 · 8, 8, 2 · 64, 128, 96, 32, 4 … row sums 1, 18, 324, 5832, 104976, 1889568, …
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A091042 → D
3 · 10, 10 · 21, 70, 21 · 36, 252, 252, 36 … row sums 0, 3, 20, 112, 576, 2816, 13312, 61440, …
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A094638: Triangle read by rows: T(n,k) = |s(n,n+1-k)|, where s(n,k) are the signed Stirling numbers of the first kind A008276 (1 <= k <= n; in other words, the unsigned Stirling numbers of the first …
1 · 1, 1 · 1, 3, 2 · 1, 6, 11, 6 … row sums 1, 2, 6, 24, 120, 720, 5040, 40320, …
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A121574 → Veronese 2
1 · 2 · 4, 1 · 8, 8 … row sums 1, 2, 5, 16, 54, 180, 595, 1964, …
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A114656 → basis A013609
1 · 3, 2 · 11, 16, 4 · 45, 102, 60, 8 … row sums 1, 5, 31, 215, 1597, 12425, 99955, …
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A116414 → θ+1
1 · 4, 2 · 13, 16, 3 · 40, 84, 36, 4 … row sums 1, 6, 32, 164, 819, 4012, 19363, 92352, …
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A304236 → basis A007318
1 · 1 · 4, 3 · 7, 6 … row sums 1, 1, 7, 13, 55, 133, 463, 1261, …
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A152198 → basis A013611
1 · 1 · 2, 4 · 2, 4 … row sums 1, 1, 6, 6, 36, 36, 216, 216, …
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A128813 → basis A013610
1 · 2, 3 · 8, 30, 27 · 56, 354, 729, 486 … row sums 1, 5, 65, 1625, 66625, 4064125, …
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A007318 → ⊙ C(n+1,k+1) (shift +2) → reverse
8 · 18, 12 · 32, 64, 16 · 50, 200, 150, 20 … row sums 8, 30, 112, 420, 1584, 6006, 22880, …
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A356546 → basis A013611
1 · 4, 8 · 24, 96, 96 · 160, 960, 1920, 1280 … row sums 1, 12, 216, 4320, 90720, 1959552, …
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A026374 → D
1 · 3, 2 · 4, 8, 3 · 6, 22, 18, 4 … row sums 0, 1, 5, 15, 50, 125, 375, 875, …
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A082985 → Veronese 2
1 · 1 · 1, 5 · 1, 14 … row sums 1, 1, 6, 15, 37, 100, 261, 681, …
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A007318 → ×(1+2n+n²) → (θ+1)²
1 · 4, 16 · 9, 72, 81 · 16, 192, 432, 256 … row sums 1, 20, 162, 896, 4000, 15552, 54880, …
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A038323: Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*9^j.
1 · 11, 9 · 121, 198, 81 · 1331, 3267, 2673, 729 … row sums 1, 20, 400, 8000, 160000, 3200000, …
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A026374: Triangular array T read by rows: T(n,0) = T(n,n) = 1 for all n >= 0, T(n,k) = T(n-1,k-1) + T(n-1,k) for odd n and 1< = k <= n-1, T(n,k) = T(n-1,k-1) + T(n-1,k) + T(n-2,k-1) for even n and 1 …
1 · 1, 1 · 1, 3, 1 · 1, 4, 4, 1 … row sums 1, 2, 5, 10, 25, 50, 125, 250, …
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A038207 → Veronese 2 (j=1)
1 · 4 · 12, 1 · 32, 8 … row sums 0, 1, 4, 13, 40, 121, 364, 1093, …
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A091042 → D+1
1 · 4, 3 · 11, 20, 5 · 22, 91, 56, 7 … row sums 1, 7, 36, 176, 832, 3840, 17408, 77824, …
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A081577 → Veronese 2
1 · 1 · 1, 1 · 1, 7 … row sums 1, 1, 2, 8, 24, 60, 160, 448, …
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A188440 → basis A007318
1 · 1 · 3, 2 · 3, 2 … row sums 1, 1, 5, 5, 25, 25, 125, 125, …
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A367270 → D
2 · 6, 6 · 12, 36, 12 · 20, 120, 120, 20 … row sums 0, 0, 2, 12, 60, 280, 1260, 5544, …
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A120910 → θ+1
3 · 6, 6 · 12, 24, 9 · 24, 72, 54, 12 … row sums 3, 12, 45, 162, 567, 1944, 6561, 21870, …