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%I #5 Nov 13 2015 20:27:32
%S 1,48,1520,38452,869740,18720732,396975296,8458711900,183197270195,
%T 4060222577980,92457026432364,2168229942019192,52433345808131318,
%U 1308330112118893072,33691149632085370112,895280698879996177240,24542614402374373350957,693775997089974201665016
%N Number of permutations of [n] with exactly three (possibly overlapping) occurrences of the consecutive pattern 3412.
%H Alois P. Heinz, <a href="/A264322/b264322.txt">Table of n, a(n) for n = 8..180</a>
%e a(8) = 1: 78563412.
%e a(9) = 48: 189674523, 289674513, 389674512, ..., 896745132, 896745231, 978563412.
%Y Column k=3 of A264319.
%K nonn
%O 8,2
%A _Alois P. Heinz_, Nov 11 2015
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