OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..865
MATHEMATICA
Table[DivisorSigma[0, n*2^n - 1], {n, 1, 100}] (* Amiram Eldar, Dec 11 2023 *)
PROG
(PARI) a(n) = numdiv(n*2^n - 1); \\ Amiram Eldar, Dec 11 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Tyler Busby, Oct 26 2023
STATUS
approved