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 A264323 #4 Nov 13 2015 20:26:03 %S A264323 1,89,5461,238356,8368831,259770975,7542478135,211794493290, %T A264323 5870838954710,162745118970610,4549825111681964,128994813976541176, %U A264323 3722621639161251074,109622707753571938234,3299453321046315967098,101610430484526744949716,3203896974449174366163207 %N A264323 Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the consecutive pattern 3412. %H A264323 Alois P. Heinz, <a href="/A264323/b264323.txt">Table of n, a(n) for n = 10..180</a> %Y A264323 Column k=4 of A264319. %K A264323 nonn %O A264323 10,2 %A A264323 _Alois P. Heinz_, Nov 11 2015