A201740 The value of the Mertens function at n^n.

1, -1, -1, -1, 4, 39, -158, 211, -186, -33722, 55130, 192039, -4032991

Offset: 1

Author

Carl Najafi, Dec 04 2011

Keywords

• sign
• more

References

• Marc Deleglise and Joel Rivat, Computing the summation of the Mobius function, Experiment. Math. 5 (1996), no. 4, 291-295.

Crossrefs

Cf. A002321, A000312, A084237.

Programs

Mathematica

Table[Sum[MoebiusMu[k], {k, n^n}], {n, 7}]

Formula

a(n) = A002321(n^n).

Extensions

a(9)-a(10) from Max Alekseyev, Dec 10 2011

a(11) from Donovan Johnson, Jun 21 2012

a(12)-a(13) from Rikard Nordgren, Nov 10 2012