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 A377626 #11 Nov 03 2024 23:09:15 %S A377626 1,0,1,1,1,5,4,14,21,43,91,165,354,676,1373,2741,5445,10965,21808, %T A377626 43738,87381,174735,349647,698901,1398318,2796080,5592445,11185081, %U A377626 22369145,44740069,89477724,178957606,357914197,715826739,1431658435,2863308229,5726626746 %N A377626 Cogrowth sequence of the 12-element group A4 = <S,T | S^3, T^2, (ST)^3>. %e A377626 a(6)=4 corresponds to the words SSSSSS = TTTTTT = STSTST = TSTSTS = 1. %Y A377626 Cf. A007583 (D6), A377627 (C6 x C2), A377656 (Dic2). %K A377626 nonn,easy %O A377626 0,6 %A A377626 _Sean A. Irvine_, Nov 02 2024