OFFSET
0,2
FORMULA
T(n,-n)+T(n,-n+1)+...+T(n,n), where T is given at A065775.
Empirical g.f.: x*(4*x^8+2*x^7-8*x^6-7*x^5+5*x^3-3*x^2-12*x-7) / ((x-1)^3*(x+1)^2*(x^2+x+1)). - Colin Barker, May 04 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 20 2010
STATUS
approved