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%I #9 Jan 12 2015 09:37:40
%S 1,3,50,270,602,5376,139714,1366016,15302031,161855232,2600075865,
%T 24776769024,83295229293,1553561635125,93399961380678,
%U 2499411984278178,42789384888638364,1138928547765375000,15344070225505482050,450745170646586005994,6999343174293499456470
%N Number of permutations of [n] with exactly one occurrence of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.
%H Alois P. Heinz, <a href="/A246221/b246221.txt">Table of n, a(n) for n = 3..130</a>
%Y Column k=1 of A242783.
%K nonn
%O 3,2
%A _Alois P. Heinz_, Aug 19 2014
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