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 A269116 #6 Mar 02 2016 21:11:01 %S A269116 0,0,1,224296,132279480115,208728647384065181, %T A269116 791857392420720220446647,6541943110420293280017597411002, %U A269116 108710813295434106456771753677041770655,3413618982844502796240740610191874586048936771,192715148077645864521949395033355447100683080114830089 %N A269116 Number of sequences with 6 copies each of 1,2,...,n avoiding the pattern 12...n. %H A269116 Alois P. Heinz, <a href="/A269116/b269116.txt">Table of n, a(n) for n = 0..91</a> %F A269116 a(n) = A248814(n) - A268849(n). %Y A269116 Column k=6 of A269129. %Y A269116 Cf. A248814, A268849. %K A269116 nonn %O A269116 0,4 %A A269116 _Alois P. Heinz_, Feb 19 2016