OFFSET
0,2
FORMULA
G.f.: 1/((1-x^2)*(1-x))^8.
a(2*k)=binomial(k+11, 11)* (16*k^4+384*k^3+2936*k^2+7584*k+4095)/(15*7*13*3);
a(2*k+1)= binomial(k+12, 12)*8*(2*k+5)*(2*k+13)*(2*k+21)/(15*7*13), k >= 0.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wolfdieter Lang, Feb 02 2001
STATUS
approved