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 A291556 Square array A(n,k), n>=0, k>=0, read by antidiagonals: A(n,k) = (n!)^k * Sum_{i=1..n} 1/i^k. 11
 0, 0, 1, 0, 1, 2, 0, 1, 3, 3, 0, 1, 5, 11, 4, 0, 1, 9, 49, 50, 5, 0, 1, 17, 251, 820, 274, 6, 0, 1, 33, 1393, 16280, 21076, 1764, 7, 0, 1, 65, 8051, 357904, 2048824, 773136, 13068, 8, 0, 1, 129, 47449, 8252000, 224021776, 444273984, 38402064, 109584, 9 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 LINKS Seiichi Manyama, Antidiagonals n = 0..59, flattened FORMULA A(0, k) = 0, A(1, k) = 1, A(n+1, k) = (n^k+(n+1)^k)*A(n, k) - n^(2*k)*A(n-1, k). EXAMPLE Square array begins:    0,  0,   0,     0,      0, ...    1,  1,   1,     1,      1, ...    2,  3,   5,     9,     17, ...    3, 11,  49,   251,   1393, ...    4, 50, 820, 16280, 357904, ... MAPLE A:= (n, k)-> n!^k * add(1/i^k, i=1..n): seq(seq(A(n, d-n), n=0..d), d=0..10);  # Alois P. Heinz, Aug 26 2017 CROSSREFS Columns k=0-10 give: A001477, A000254, A001819, A066989, A203229, A099827, A291456, A291505, A291506, A291507, A291508. Rows n=0-3 give: A000004, A000012, A000051, A074528. Main diagonal gives A060943. Sequence in context: A316269 A242379 A103438 * A323073 A167279 A068920 Adjacent sequences:  A291553 A291554 A291555 * A291557 A291558 A291559 KEYWORD nonn,tabl AUTHOR Seiichi Manyama, Aug 26 2017 STATUS approved

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Last modified April 23 21:25 EDT 2019. Contains 322388 sequences. (Running on oeis4.)