OFFSET
2,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 2..365
EXAMPLE
a(8)=60 because the 8th tribonacci number 24 has divisors {1, 2, 3, 4, 6, 8, 12, 24}.
MATHEMATICA
DivisorSigma[1, LinearRecurrence[{1, 1, 1}, {1, 1, 2}, 36]] (* Amiram Eldar, Oct 23 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Sean A. Irvine, Oct 22 2023
STATUS
approved