OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..61
FORMULA
G.f.: 1/(Sum_{k>=0} A268646(k) * (-x)^k).
PROG
(PARI) c(n) = binomial(2*n, n)/(n+1);
a(n) = my(A=1+O(x)); for(i=1, n, A=1+c(n-i+1)*x/A); polcoef(A, n);
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Apr 15 2021
STATUS
approved