OFFSET
0,2
FORMULA
G.f.: 1/((1-x^2)*(1-x))^9.
a(2*k)= binomial(k+13, 13)*(8*k^4+190*k^3+1414*k^2+3488*k+1785)/(17*15*7);
a(2*k+1)= binomial(k+13, 13)*(8*k^4+258*k^3+2842*k^2+12192*k+16065)/(17*15*7), k >= 0.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wolfdieter Lang, Feb 02 2001
STATUS
approved