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A099990 a(n) = Moebius(2n+1). 4
1, -1, -1, -1, 0, -1, -1, 1, -1, -1, 1, -1, 0, 0, -1, -1, 1, 1, -1, 1, -1, -1, 0, -1, 0, 1, -1, 1, 1, -1, -1, 0, 1, -1, 1, -1, -1, 0, 1, -1, 0, -1, 1, 1, -1, 1, 1, 1, -1, 0, -1, -1, -1, -1, -1, 1, -1, 1, 0, 1, 0, 1, 0, -1, 1, -1, 1, 0, -1, -1, 1, 1, 1, 0, -1, -1, 0, 1, -1, 1, 1, -1, -1, -1, 0, 0, -1, 0, 1, -1, -1, 1, 1, 1, 0, -1, -1, -1, -1, -1, 1, 1, 1, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..104.

MATHEMATICA

lst={}; Do[AppendTo[lst, MoebiusMu[n]], {n, 1, 6!, 2}]; lst (* Vladimir Joseph Stephan Orlovsky, Sep 20 2008 *)

CROSSREFS

Bisection of A008683. Cf. A099991.

Sequence in context: A106470 A106465 A071027 * A089939 A059095 A187944

Adjacent sequences:  A099987 A099988 A099989 * A099991 A099992 A099993

KEYWORD

sign,easy

AUTHOR

N. J. A. Sloane, Nov 20 2004

STATUS

approved

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Last modified February 19 12:09 EST 2019. Contains 320310 sequences. (Running on oeis4.)