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A157255
a(n) = sigma_(n^n)(n).
1
1, 17, 7625597484988
OFFSET
1,2
LINKS
MATHEMATICA
Table[DivisorSigma[n^n, n], {n, 1, 5}]
PROG
(PARI) a(n) = sigma(n, n^n); \\ Amiram Eldar, Mar 01 2024
CROSSREFS
Sequence in context: A346997 A343778 A271562 * A114432 A134686 A257305
KEYWORD
bref,nonn
AUTHOR
STATUS
approved