OFFSET
1,2
MATHEMATICA
Table[Sum[n^(n^2/i)*(1 - Ceiling[n/i] + Floor[n/i]), {i, n}], {n, 10}]
PROG
(PARI) a(n) = sumdiv(n, d, n^(n^2/d)); \\ Michel Marcus, Oct 03 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Oct 02 2021
STATUS
approved