0,2

Apart from initial term, identical to A140139 if offsets are ignored. - R. J. Mathar, May 11 2008

Table of n, a(n) for n=0..70.

O.g.f.: x(1+x)(2-x)/(1-x)^2. - R. J. Mathar, May 11 2008

Sequence in context: A007069 A182463 A163985 * A140139 A184737 A206815

Adjacent sequences: A130770 A130771 A130772 * A130774 A130775 A130776

nonn

Paul Curtz, Jul 14 2007

approved