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%I #5 Apr 03 2013 11:56:54
%S 0,0,0,0,0,2,32,322,2634,19216,130662,848284,5334332,32788726,
%T 198201268,1183152686,6995479542,41055940756,239560353258,
%U 1391435203864,8052418072728,46464481278410,267483032264168,1536914425518970,8817393642571330
%N Number of permutations of length n containing exactly 1 occurrence of 1234 and 1 occurrence of 1243.
%H B. Nakamura, <a href="http://arxiv.org/abs/1301.5080">Approaches for enumerating permutations with a prescribed number of occurrences of patterns</a>, arXiv 1301.5080, 2013.
%p # Programs can be obtained from author's personal website.
%Y Cf. A006318, A224292.
%K nonn
%O 1,6
%A _Brian Nakamura_, Apr 03 2013
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