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 A305466 Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where A(n,k) is Sum_{j=0..floor(n/2)} ((n-j)!/j!)*binomial(n-j,j)*k^(n-2*j)*(-1)^j. 4
 1, 1, 0, 1, 1, -1, 1, 2, 1, 0, 1, 3, 7, 2, 1, 1, 4, 17, 40, 7, 0, 1, 5, 31, 150, 313, 33, -1, 1, 6, 49, 368, 1783, 3090, 191, 0, 1, 7, 71, 730, 5857, 26595, 36767, 1304, 1, 1, 8, 97, 1272, 14551, 116772, 476927, 511648, 10241, 0, 1, 9, 127, 2030, 30457, 363045, 2796671, 9988872, 8149601, 90865, -1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 LINKS Seiichi Manyama, Antidiagonals n = 0..139, flattened FORMULA A(n,k) = k*n*A(n-1,k) - A(n-2,k) for n>1. EXAMPLE Square array begins:     1,  1,   1,    1,    1,     1, ...     0,  1,   2,    3,    4,     5, ...    -1,  1,   7,   17,   31,    49, ...     0,  2,  40,  150,  368,   730, ...     1,  7, 313, 1783, 5857, 14551, ... CROSSREFS Columns k=0-3 give A056594, A058797, A093985(n-1), A305471. Rows n=0-2 give A000012, A001477, A056220. Main diagonal gives A305467. Cf. A305401. Sequence in context: A320080 A246106 A322836 * A160114 A213028 A287698 Adjacent sequences:  A305463 A305464 A305465 * A305467 A305468 A305469 KEYWORD sign,tabl AUTHOR Seiichi Manyama, Jun 02 2018 STATUS approved

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Last modified September 18 01:54 EDT 2021. Contains 347504 sequences. (Running on oeis4.)