OFFSET
0,2
COMMENTS
Apart from initial term, identical to A140139 if offsets are ignored. - R. J. Mathar, May 11 2008
FORMULA
O.g.f.: x(1+x)(2-x)/(1-x)^2. - R. J. Mathar, May 11 2008
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Curtz, Jul 14 2007
STATUS
approved