OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
FORMULA
EXAMPLE
a(4) = 84 because 4^3+1 = 65 and the sum of the 4 divisors { 1, 5, 13, 65} is 84.
MATHEMATICA
Table[Total[Divisors[n^3 + 1]], {n, 0, 50}]
DivisorSigma[1, Range[0, 40]^3+1] (* Harvey P. Dale, Jul 27 2021 *)
PROG
(Magma) [SumOfDivisors(n^3+1): n in [0..50]];
(PARI) a(n) = sigma(n^3+1); \\ Michel Marcus, Jun 19 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jan 01 2014
STATUS
approved