OFFSET
1,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..214
MATHEMATICA
a[n_] := DivisorSum[n, #^(# + n + 1) &]; Array[a, 13] (* Amiram Eldar, Oct 04 2023 *)
PROG
(PARI) {a(n) = sumdiv(n, d, d^(d+n+1))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Nov 08 2017
STATUS
approved