OFFSET
0,7
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..498
FORMULA
a(0) = 1; a(n) = Sum_{k=0..floor((n-3)/4)} binomial(n,4*k+3) * a(n-4*k-3).
E.g.f.: 1 / ( 1 - (sinh(x) - sin(x))/2 ).
PROG
(PARI) my(N=30, x='x+O('x^N)); Vec(serlaplace(1/(1-(sinh(x)-sin(x))/2)))
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Sep 22 2023
STATUS
approved