A171096 Solutions to the equation M(n) = -1 (M = Mertens's function A002321).

3, 4, 6, 10, 15, 16, 22, 26, 27, 28, 35, 36, 38, 41, 57, 59, 60, 62, 63, 64, 66, 69, 87, 88, 91, 92, 102, 123, 124, 125, 126, 129, 134, 135, 136, 143, 144, 151, 152, 153, 155, 156, 158, 165, 167, 168, 169, 210, 213

Offset: 1

Author

Neven Juric (neven.juric(AT)apis-it.hr), Sep 10 2010

Keywords

• nonn

Links

• Seiichi Manyama, Table of n, a(n) for n = 1..10000
• Eric Weisstein's World of Mathematics, Mertens Function

Crossrefs

Cf. A028442, A118684.

Programs

PARI

isok(n) = sum(k=1, n, moebius(k)) == -1; \\ Michel Marcus, Nov 20 2017