This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A294579 #27 Jan 14 2023 08:44:31 %S A294579 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, %T A294579 80,8,1,129,730,1537,626,588,50,15,1,257,2188,6145,3126,4508,344,161, %U A294579 13,1,513,6562,24577,15626,35652,2402,2049,163,18 %N 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). %H A294579 Seiichi Manyama, <a href="/A294579/b294579.txt">Antidiagonals n = 1..140, flattened</a> %F A294579 L.g.f. of column k: -log(Product_{j>=1} (1 - j^k * x^j)). - _Seiichi Manyama_, Jun 02 2019 %F A294579 G.f. of column k: Sum_{j>0} j^(k+1) * x^j / (1 - j^k * x^j). - _Seiichi Manyama_, Jan 14 2023 %e A294579 Square array begins: %e A294579 1, 1, 1, 1, 1, ... %e A294579 3, 5, 9, 17, 33, ... %e A294579 4, 10, 28, 82, 244, ... %e A294579 7, 25, 97, 385, 1537, ... %e A294579 6, 26, 126, 626, 3126, ... %Y A294579 Columns k=0..2 give A000203, A078308, A294567. %Y A294579 Rows k=0..1 give A000012, A000051(n+1). %Y A294579 Cf. A292166, A292193. %K A294579 nonn,tabl %O A294579 1,3 %A A294579 _Seiichi Manyama_, Nov 02 2017