OFFSET
1,1
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
Vaclav Kotesovec, Graph - the asymptotic ratio (100000 terms)
FORMULA
Sum_{k=1..n} a(k) ~ (15*n*(log(n) + 2*gamma - 1) + n*(5*log(2) + 3*log(3))) / 6, where gamma is the Euler-Mascheroni constant A001620.
MATHEMATICA
Table[DivisorSigma[0, 6*n], {n, 1, 150}]
PROG
(PARI) A372786(n) = numdiv(6*n); \\ Antti Karttunen, Jul 19 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, May 13 2024
STATUS
approved