OFFSET
1,1
LINKS
William A. Stein, Dimensions of the spaces S_k(Gamma_0(N)).
William A. Stein, The modular forms database
FORMULA
Empirical g.f.: x*(x^5+5*x^4+16*x^3+21*x^2+15*x+4) / ((x-1)^2*(x+1)*(x^2+x+1)). [Colin Barker, Feb 07 2013]
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 08 2001
STATUS
approved