OFFSET
1,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..1000
PROG
(PARI) {a(n) = polcoeff(polclass(-2*n-n%2), 0)}
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Jun 02 2018
STATUS
approved