OFFSET
0,2
FORMULA
G.f.: 1/4*(1-(1-4*x*(1+x)^2)^(1/2))^2/x^2/(1+x)^4. - Vladeta Jovovic, Oct 10 2003
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul D. Hanna, Jul 29 2002
EXTENSIONS
More terms from Vladeta Jovovic, Oct 10 2003
STATUS
approved