OFFSET
1,4
COMMENTS
Inverse Möbius transform of A348030.
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..20000
MATHEMATICA
f[p_, e_] := (p + 1)^e; a[1] = 0; a[n_] := Times @@ f @@@ FactorInteger[n] - DivisorSigma[1, n]; Array[a, 100] (* Amiram Eldar, Oct 20 2021 *)
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Oct 20 2021
STATUS
approved