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 A202219 #6 Mar 30 2012 17:30:01 %S A202219 1,2,6,24,119,708,4914,38977,347794,3448202,37605875,447411544, %T A202219 5766612686,80042208149,1190366133003,18882991058982,318265784348321, %U A202219 5679795502722184,106993290279989932,2121567147336853153,44171924298572910714,963472321485580749448 %N A202219 Number of permutations avoiding the consecutive pattern 45312. %C A202219 a(n) is the number of permutations on [n] that avoid the consecutive pattern 45312. It is the same as the number of permutations which avoid 21354. %H A202219 Ray Chandler, <a href="/A202219/b202219.txt">Table of n, a(n) for n = 1..40</a> %H A202219 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 A202219 Cf. A177523, A202213-A202236. %K A202219 nonn %O A202219 1,2 %A A202219 _Ray Chandler_, Dec 15 2011