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 A294579 Square array A(n,k), n >= 1, k >= 0, read by antidiagonals, where A(n,k) is Sum_{d|n} d^(1 + k*n/d). 5
 1, 1, 3, 1, 5, 4, 1, 9, 10, 7, 1, 17, 28, 25, 6, 1, 33, 82, 97, 26, 12, 1, 65, 244, 385, 126, 80, 8, 1, 129, 730, 1537, 626, 588, 50, 15, 1, 257, 2188, 6145, 3126, 4508, 344, 161, 13, 1, 513, 6562, 24577, 15626, 35652, 2402, 2049, 163, 18 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Seiichi Manyama, Antidiagonals n = 1..140, flattened FORMULA L.g.f. of column k: -log(Product_{j>=1} (1 - j^k*x^j)). - Seiichi Manyama, Jun 02 2019 EXAMPLE Square array begins:    1,  1,   1,   1,    1, ...    3,  5,   9,  17,   33, ...    4, 10,  28,  82,  244, ...    7, 25,  97, 385, 1537, ...    6, 26, 126, 626, 3126, ... CROSSREFS Columns k=0..2 give A000203, A078308, A294567. Rows k=0..1 give A000012, A000051(n+1). Cf. A292166, A292193. Sequence in context: A110813 A124883 A319278 * A308502 A308674 A308676 Adjacent sequences:  A294576 A294577 A294578 * A294580 A294581 A294582 KEYWORD nonn,tabl AUTHOR Seiichi Manyama, Nov 02 2017 STATUS approved

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Last modified January 19 20:41 EST 2020. Contains 331066 sequences. (Running on oeis4.)