cp's OEIS Frontend

A316411 Number of multisets of exactly ten nonempty binary words with a total of n letters such that no word has a majority of 0's.

%I A316411 #9 Jul 02 2018 16:32:17
%S A316411 1,3,10,33,98,291,826,2320,6342,17188,45750,120655,314335,812161,
%T A316411 2078985,5283157,13326283,33400066,83195864,206069915,507722068,
%U A316411 1244740868,3037497201,7379529734,17854498058,43026654989,103302756909,247127149283,589196413579
%N A316411 Number of multisets of exactly ten nonempty binary words with a total of n letters such that no word has a majority of 0's.
%H A316411 Alois P. Heinz, <a href="/A316411/b316411.txt">Table of n, a(n) for n = 10..1000</a>
%F A316411 a(n) = [x^n y^10] 1/Product_{j>=1} (1-y*x^j)^A027306(j).
%p A316411 g:= n-> 2^(n-1)+`if`(n::odd, 0, binomial(n, n/2)/2):
%p A316411 b:= proc(n, i) option remember; series(`if`(n=0 or i=1, x^n, add(
%p A316411        binomial(g(i)+j-1, j)*b(n-i*j, i-1)*x^j, j=0..n/i)), x, 11)
%p A316411     end:
%p A316411 a:= n-> coeff(b(n$2), x, 10):
%p A316411 seq(a(n), n=10..38);
%Y A316411 Column k=10 of A292506.
%Y A316411 Cf. A027306, A292549.
%K A316411 nonn
%O A316411 10,2
%A A316411 _Alois P. Heinz_, Jul 02 2018