OFFSET
1,8
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..10000
PROG
(PARI) a(n) = sum(k=n^2, (n+1)^2, (isprime(k)&&k%4==3)-(isprime(k)&&k%4==1));
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Oct 06 2021
STATUS
approved