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A361708
Inverse Moebius transform of nonprimes.
1
1, 5, 7, 13, 10, 21, 13, 27, 22, 30, 19, 49, 22, 39, 40, 52, 27, 63, 29, 68, 51, 56, 35, 98, 46, 64, 61, 87, 43, 114, 46, 98, 73, 80, 72, 142, 53, 87, 83, 138, 58, 145, 61, 126, 118, 103, 66, 189, 81, 135, 103, 144, 75, 177, 104, 178, 113, 127, 82, 254, 85, 135, 152, 185, 119
OFFSET
1,2
LINKS
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