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 A202217 #6 Mar 30 2012 17:30:01 %S A202217 1,2,6,24,119,708,4914,38976,347776,3447932,37601916,447352224, %T A202217 5765690544,80027220448,1190110692204,18878422622976,318180082610048, %U A202217 5678110761876224,106958628519952128,2120821833862388544,44155198873515034560,963081167548894179456 %N A202217 Number of permutations avoiding the consecutive pattern 45132. %C A202217 a(n) is the number of permutations on [n] that avoid the consecutive pattern 45132. It is the same as the number of permutations which avoid 21534, 23154 or 43512. %H A202217 Ray Chandler, <a href="/A202217/b202217.txt">Table of n, a(n) for n = 1..40</a> %H A202217 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 A202217 Cf. A177523, A202213-A202236. %K A202217 nonn %O A202217 1,2 %A A202217 _Ray Chandler_, Dec 14 2011