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A343804
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T(n, k) = Sum_{j=k..n} binomial(n, j)*E2(j, j-k), where E2 are the Eulerian numbers A201637. Triangle read by rows, T(n, k) for 0 <= k <= n.
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0
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1, 1, 1, 1, 4, 1, 1, 15, 11, 1, 1, 64, 96, 26, 1, 1, 325, 824, 448, 57, 1, 1, 1956, 7417, 6718, 1779, 120, 1, 1, 13699, 71595, 96633, 43411, 6429, 247, 1, 1, 109600, 746232, 1393588, 944618, 243928, 21898, 502, 1, 1, 986409, 8403000, 20600856, 19521210, 7739362, 1250774, 71742, 1013, 1
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OFFSET
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0,5
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LINKS
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EXAMPLE
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Triangle starts:
[0] 1
[1] 1, 1
[2] 1, 4, 1
[3] 1, 15, 11, 1
[4] 1, 64, 96, 26, 1
[5] 1, 325, 824, 448, 57, 1
[6] 1, 1956, 7417, 6718, 1779, 120, 1
[7] 1, 13699, 71595, 96633, 43411, 6429, 247, 1
[8] 1, 109600, 746232, 1393588, 944618, 243928, 21898, 502, 1
[9] 1, 986409, 8403000, 20600856, 19521210, 7739362, 1250774, 71742, 1013, 1
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MAPLE
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T := (n, k) -> add(binomial(n, r)*combinat:-eulerian2(r, r-k), r = k..n):
seq(seq(T(n, k), k = 0..n), n = 0..9);
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CROSSREFS
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Cf. A046802 (Eulerian first order).
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KEYWORD
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AUTHOR
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STATUS
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approved
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