OFFSET
1,1
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
Rémy Sigrist, PARI program for A126761
EXAMPLE
31 is the 11th prime. So 31 = Sum_{1<=k<=11, gcd(k,12)=1} a(k) = a(1) + a(5) + a(7) + a(11) = 2 + 9 + 3 + 17.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
sign
AUTHOR
Leroy Quet, Feb 22 2007
EXTENSIONS
More terms from Rémy Sigrist, Feb 06 2019
STATUS
approved