OFFSET
1,6
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
MATHEMATICA
Table[DivisorSum[n, # MoebiusMu[n/#]/FactorInteger[#][[1, 1]] &], {n, 98}] (* Michael De Vlieger, Mar 10 2018 *)
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 10 2018
STATUS
approved