A346615 Moebius transform of A344005.

1, 0, 1, 2, 3, 0, 5, 4, 6, 0, 9, -1, 11, 0, 0, 8, 15, 0, 17, -2, -1, 0, 21, 1, 20, 0, 18, -1, 27, 0, 29, 16, 0, 0, 5, -1, 35, 0, -1, 7, 39, 0, 41, -1, -2, 0, 45, -1, 42, 0, 0, -2, 51, 0, -3, -4, -1, 0, 57, 11, 59, 0, 15, 32, 10, 0, 65, -2, 0, 0, 69, -5, 71, 0, -1, -1, 6, 0, 77, -8

Offset: 0

Author

N. J. A. Sloane, Aug 18 2021

Keywords

• sign

Links

• N. J. A. Sloane, Transforms.

Crossrefs

Cf. A011772, A344767, A346614, A344005, A346616.

Programs

PARI

f(n) = my(m=1); while ((m*(m+1))%n, m++); m; \\ A344005
a(n) = sumdiv(n, d, moebius(n/d)*f(d)); \\ Michel Marcus, Aug 19 2021