A333831 Dirichlet inverse of Mertens function (A002321).

1, 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 4, 3, 2, 5, 2, 2, 4, 3, 7, 6, 1, 2, 8, 6, 1, 6, 5, 2, 9, 4, 8, 7, 2, 9, 13, 2, 1, 6, 10, 1, 10, 3, 7, 19, 2, 3, 16, 7, 7, 6, 8, 3, 14, 10, 14, 7, 0, 1, 31, 2, 1, 19, 8, 12, 7, 2, 6, 5, 14, 3, 35, 4, 3, 23, 9, 10, 11, 4, 24

Offset: 1

Author

Florian Lang, Apr 07 2020

Keywords

• sign
• easy

Links

• Florian Lang, Table of n, a(n) for n = 1..9998

Crossrefs

Cf. A002321.

Programs

PARI

seq(n)={dirdiv(vector(n, n, n==1), vector(n, n, sum(k=1, n, moebius(k))))} \\ Andrew Howroyd, Apr 07 2020