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 A377656 #10 Nov 03 2024 23:09:23 %S A377656 1,0,0,0,1,5,7,7,19,39,95,187,323,663,1351,2755,5579,10863,21679, %T A377656 43643,87411,175399,349591,697843,1397787,2796255,5595135,11187435, %U A377656 22362691,44735255,89480167,178966627,357936619,715798479,1431613775,2863328347,5726658323 %N A377656 Cogrowth sequence of the 12-element dicyclic group Dic12 = <S,T | S^6, T^4, STST^3, S^3T^2>. %e A377656 a(5) = 5 corresponds to the words SSSTT = TSSST = TTSSS = STTSS = SSTTS = 1. %Y A377656 Cf. A007583 (D6), A377626 (A4), A377627 (C6 x C2). %K A377656 nonn,easy %O A377656 0,6 %A A377656 _Sean A. Irvine_, Nov 03 2024