OFFSET
0,1
COMMENTS
All terms are even.
LINKS
Robert Israel, Table of n, a(n) for n = 0..10000
FORMULA
a(n) = d(5 + 8*n).
Sum_{k=1..n} a(k) ~ (n/2) * (log(n) + 2*gamma - 1 + 5*log(2)), where gamma is Euler's constant (A001620). - Amiram Eldar, Jan 14 2024
MAPLE
map(numtheory:-tau, [seq(i, i=5..1000, 8)]); # Robert Israel, Mar 20 2020
MATHEMATICA
Table[DivisorSigma[0, 8*n + 5], {n, 0, 100}] (* Amiram Eldar, Jan 14 2024 *)
PROG
(PARI) a(n) = numdiv(5+8*n); \\ Michel Marcus, Oct 15 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Zak Seidov, May 23 2010
STATUS
approved