OFFSET
0,7
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..449
MAPLE
N:= 30: # to get a(0)..a(N)
P:= mul(1-x^m+x^(2*m)/2, m=1..N):
seq(coeff(P, x, n)*n!, n=0..N); # Robert Israel, Oct 01 2017
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Oct 01 2017
STATUS
approved