OFFSET
1,2
LINKS
N. J. A. Sloane, Transforms
FORMULA
a(n) = Sum_{d|n} A018252(d).
MAPLE
Nonprime:= remove(isprime, [$1..1000]): N:= nops(Nonprime):
seq(add(Nonprime[d], d=numtheory:-divisors(n)), n=1..N); # Robert Israel, Mar 23 2023
CROSSREFS
KEYWORD
nonn,look
AUTHOR
Ilya Gutkovskiy, Mar 21 2023
STATUS
approved