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A347956
Dirichlet convolution of A003602 with A069359.
10
0, 1, 1, 3, 1, 8, 1, 7, 5, 11, 1, 22, 1, 14, 13, 15, 1, 35, 1, 31, 16, 20, 1, 50, 8, 23, 20, 40, 1, 81, 1, 31, 22, 29, 19, 95, 1, 32, 25, 71, 1, 106, 1, 58, 62, 38, 1, 106, 11, 77, 31, 67, 1, 134, 25, 92, 34, 47, 1, 217, 1, 50, 78, 63, 28, 156, 1, 85, 40, 151, 1, 215, 1, 59, 95, 94, 28, 181, 1, 151, 74, 65, 1, 286, 34
OFFSET
1,4
LINKS
FORMULA
a(n) = Sum_{d|n} A003602(d) * A069359(n/d).
PROG
(PARI)
A003602(n) = (1+(n>>valuation(n, 2)))/2;
A069359(n) = (n*sumdiv(n, d, isprime(d)/d)); \\ From A069359
A347956(n) = sumdiv(n, d, A003602(d)*A069359(n/d));
CROSSREFS
Cf. also A347954, A347955, A347957.
Sequence in context: A347954 A217598 A347235 * A280207 A319045 A347134
KEYWORD
nonn
AUTHOR
Antti Karttunen, Sep 20 2021
STATUS
approved