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 A269126 #6 Mar 02 2016 21:17:20 %S A269126 1,40319,81537026047,360953073372968159,2179159866745975811590271, %T A269126 15006398706095549205738572240519, %U A269126 108710813295434106456771753677041770655,798203800902002138190338074022806761037450631,5841526335200139692050292842849347521755651331941759 %N A269126 Number of sequences with n copies each of 1,2,...,8 avoiding the pattern 12...8. %H A269126 Alois P. Heinz, <a href="/A269126/b269126.txt">Table of n, a(n) for n = 0..60</a> %F A269126 a(n) = A071550(n) - A268844(n). %Y A269126 Row n=8 of A269129. %Y A269126 Cf. A071550, A268844. %K A269126 nonn %O A269126 0,2 %A A269126 _Alois P. Heinz_, Feb 19 2016