%I #10 Aug 22 2019 12:18:12
%S 2,7,13,17,23,29,33,39,45,49,55,61,65,71,77,81,87,93,97,103,109,113,
%T 119,125,129,135,141,145,151,157,161,167,173,177,183,189,193,199,205,
%U 209,215,221,225,231,237,241,247,253,257,263
%N Dimension of the space of weight 2n cusp forms for Gamma_0( 31 ).
%H William A. Stein, <a href="http://wstein.org/Tables/dimskg0n.gp">Dimensions of the spaces S_k(Gamma_0(N))</a>.
%H William A. Stein, <a href="http://wstein.org/Tables/">The modular forms database</a>
%F Conjectures from _Colin Barker_, Jun 09 2019: (Start)
%F G.f.: x*(2 + 5*x + 6*x^2 + 2*x^3 + x^4) / ((1 - x)^2*(1 + x + x^2)).
%F a(n) = a(n-1) + a(n-3) - a(n-4) for n>5.
%F (End)
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Jul 08 2001