login
A294773
a(n) = Sum_{d|n} d^(d+n+1).
3
1, 33, 2188, 262273, 48828126, 13060753578, 4747561509944, 2251799880796161, 1350851717674586413, 1000000000152587898818, 895430243255237372246532, 953962166441299506564257602, 1192533292512492016559195008118
OFFSET
1,2
LINKS
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