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%I #6 Mar 30 2012 17:30:01
%S 1,2,6,24,119,708,4914,38976,347775,3447912,37601586,447346944,
%T 5765604885,80025786960,1190085736014,18877969022976,318171464604945,
%U 5677939605422880,106955077375109430,2120744934976978944,44153462828412744975,963040357207773472320
%N Number of permutations avoiding the consecutive pattern 34521.
%C a(n) is the number of permutations on [n] that avoid the consecutive pattern 34521. It is the same as the number of permutations which avoid 12453, 31245, 35421, 54213, 12543, 32145 or 54123.
%H Ray Chandler, <a href="/A202216/b202216.txt">Table of n, a(n) for n = 1..40</a>
%H 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 Cf. A177523, A202213-A202236.
%K nonn
%O 1,2
%A _Ray Chandler_, Dec 14 2011
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