OFFSET
0,2
FORMULA
a(n) = Sum{k=0..n} binomial(n,k) * binomial(n/2+5*k/2+1,n)/(n/2+5*k/2+1).
PROG
(PARI) a(n) = sum(k=0, n, binomial(n, k)*binomial(n/2+5*k/2+1, n)/(n/2+5*k/2+1));
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Mar 31 2024
STATUS
approved