A133695 a(n) = 2*A008683 - 1.

1, -3, -3, -1, -3, 1, -3, -1, -1, 1, -3, -1, -3, 1, 1, -1, -3, -1, -3, -1, 1, 1, -3, -1, -1, 1, -1, -1, -3, -3, -3, -1, 1, 1, 1, -1, -3, 1, 1, -1, -3, -3, -3, -1, -1, 1, -3, -1, -1, -1, 1, -1, -3, -1, 1, -1, 1, 1, -3, -1, -3, 1, -1, -1, 1, -3, -3, -1, 1, -3, -3, -1, -3, 1, -1, -1

Offset

1,2

Links

Table of n, a(n) for n=1..76.

Formula

a(n) = 2*A008683 - 1, where A008683 = the Mobius sequence.

Example

a(5) = -3 = 2*(-1) - 1.

Crossrefs

Cf. A008683.

Sequence in context: A180938 A123561 A323626 * A138114 A124330 A055177

Adjacent sequences: A133692 A133693 A133694 * A133696 A133697 A133698

Keyword

sign

Author

Gary W. Adamson, Sep 20 2007

Extensions

More terms from Petros Hadjicostas, Jul 29 2019

Status

approved