0,2

O.g.f.: -(1+x)^4/[(2*x+1)(2*x^2+2*x+1)(-1+3*x)]. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 02 2008

Cf. A033139.

Sequence in context: A079846 A067500 A078226 this_sequence A052917 A099786 A131428

Adjacent sequences: A083588 A083589 A083590 this_sequence A083592 A083593 A083594

nonn

Paul Barry (pbarry(AT)wit.ie), May 02 2003