OFFSET
0,3
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..10000
Rémy Sigrist, PARI program for A331002
FORMULA
a(2*k+1) = a(2*k) for any k >= 0.
a(2*k) = a(2*k-1) + A330779(2*k) * (-1)^k for any k > 0.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
sign
AUTHOR
Rémy Sigrist, Jan 05 2020
STATUS
approved