OFFSET
1,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..26
FORMULA
a(n) ~ n^(n^2). - Vaclav Kotesovec, Jun 08 2019
MATHEMATICA
Table[DivisorSigma[n^2, n], {n, 1, 10}] (* Vaclav Kotesovec, Jun 08 2019 *)
PROG
(PARI) {a(n) = sigma(n, n^2)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jun 08 2019
STATUS
approved