A246221 - cp's OEIS frontend

A246221 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.

%I A246221 #9 Jan 12 2015 09:37:40
%S A246221 1,3,50,270,602,5376,139714,1366016,15302031,161855232,2600075865,
%T A246221 24776769024,83295229293,1553561635125,93399961380678,
%U A246221 2499411984278178,42789384888638364,1138928547765375000,15344070225505482050,450745170646586005994,6999343174293499456470
%N A246221 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 A246221 Alois P. Heinz, <a href="/A246221/b246221.txt">Table of n, a(n) for n = 3..130</a>
%Y A246221 Column k=1 of A242783.
%K A246221 nonn
%O A246221 3,2
%A A246221 _Alois P. Heinz_, Aug 19 2014

cp's OEIS Frontend

A246221 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.