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 A036727 #5 Jul 08 2025 21:55:34 %S A036727 1,1,1,3,9,30,107,392,1489,5783,22874,91822,373111,1531744,6343528, %T A036727 26469872,111180537,469696489,1994490659,8508116485,36443396006, %U A036727 156680537096,675885192670,2924577632532,12690327612739,55208106904873 %N A036727 G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 5 generated by (1,2,3,4,5). %Y A036727 Cf. A036717-A036726. %K A036727 nonn %O A036727 0,4 %A A036727 _N. J. A. Sloane_