OFFSET
0,1
LINKS
Max Alekseyev, Table of n, a(n) for n = 0..471
EXAMPLE
a(3)=312 because 5^3+1 has divisors {1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126}.
MAPLE
a:=n->numtheory[sigma](5^n+1):
seq(a(n), n=0..100);
MATHEMATICA
DivisorSigma[1, 5^Range[0, 30] + 1] (* Paolo Xausa, Jul 03 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Sean A. Irvine, Oct 14 2023
STATUS
approved