OFFSET
1,2
COMMENTS
m divides A159068(m) for all positive integers m.
PROG
(PARI) is(m) = sum(k=1, m, binomial(m, k)*gcd(k, m))%m^2 == 0; \\ Jinyuan Wang, Aug 10 2021
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Leroy Quet, Apr 12 2009
EXTENSIONS
4 more terms from R. J. Mathar, Apr 16 2009
a(10)=6789 from Ray Chandler, Jun 19 2009
STATUS
approved