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 A036726 #5 Jul 08 2025 21:55:27 %S A036726 1,1,2,9,46,247,1436,8684,54102,345042,2241014,14771896,98568908, %T A036726 664518873,4519394316,30969650840,213625862342,1482134240438, %U A036726 10335968352644,72411026552273,509383556655134,3596650497366507,25480925906761956 %N A036726 G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 3 generated by (1,2,3)(4,5,6). %Y A036726 Cf. A036717-A036725. %K A036726 nonn %O A036726 0,3 %A A036726 _N. J. A. Sloane_