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A243232 Number of isoscent sequences of length n with exactly six ascents.

%I A243232 #7 Jun 01 2014 18:45:27
%S A243232 7,1422,61966,1419901,22720053,288205741,3105573804,29654436325,
%T A243232 258037473373,2086374808221,15899245803550,115413232143719,
%U A243232 804608004076949,5421939004211551,35497436998569721,226735499246904329,1417770877081098164,8703370306993200829
%N A243232 Number of isoscent sequences of length n with exactly six ascents.
%H A243232 Joerg Arndt and Alois P. Heinz, <a href="/A243232/b243232.txt">Table of n, a(n) for n = 10..100</a>
%p A243232 b:= proc(n, i, t) option remember; `if`(n<1, 1, expand(add(
%p A243232       `if`(j>i, x, 1) *b(n-1, j, t+`if`(j=i, 1, 0)), j=0..t+1)))
%p A243232     end:
%p A243232 a:= n-> coeff(b(n-1, 0$2), x, 6):
%p A243232 seq(a(n), n=10..35);
%Y A243232 Column k=6 of A242351.
%K A243232 nonn
%O A243232 10,1
%A A243232 _Joerg Arndt_ and _Alois P. Heinz_, Jun 01 2014