OFFSET
1,9
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..10000 (based on Hans Havermann's factorization of A156552)
FORMULA
a(p) = 0 for all primes p.
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 18 2019
STATUS
approved