OFFSET
0,1
FORMULA
a(n)=3*A074323(n+1).
O.g.f.: 3(1+3x)/(1-2x^2). - R. J. Mathar, Jul 22 2008
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Curtz, Jan 27 2008
EXTENSIONS
Edited and extended by R. J. Mathar, Jul 22 2008
STATUS
approved