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 A202229 #6 Mar 30 2012 17:30:04 %S A202229 1,2,6,24,119,708,4914,38979,347844,3449022,37618404,447603154, %T A202229 5769631250,80091726847,1191215895231,18898269051750,318553597247225, %U A202229 5685472764793353,107110426612465623,2124091932221770696,44228699419853376368,964802486928888810542 %N A202229 Number of permutations avoiding the consecutive pattern 41253. %C A202229 a(n) is the number of permutations on [n] that avoid the consecutive pattern 41253. It is the same as the number of permutations which avoid 25413, 31452 or 35214. %H A202229 Ray Chandler, <a href="/A202229/b202229.txt">Table of n, a(n) for n = 1..40</a> %H A202229 A. Baxter, B. Nakamura, and D. Zeilberger. <a href="http://www.math.rutgers.edu/~zeilberg/mamarim/mamarimhtml/auto.html">Automatic generation of theorems and proofs on enumerating consecutive Wilf-classes</a> %Y A202229 Cf. A177523, A202213-A202236. %K A202229 nonn %O A202229 1,2 %A A202229 _Ray Chandler_, Dec 15 2011