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Dimension of the space of weight 2n cusp forms for Gamma_0( 91 ).
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%I #10 Aug 22 2019 12:18:12

%S 7,26,46,62,82,102,118,138,158,174,194,214,230,250,270,286,306,326,

%T 342,362,382,398,418,438,454,474,494,510,530,550,566,586,606,622,642,

%U 662,678,698,718,734,754,774,790,810,830,846,866,886,902

%N Dimension of the space of weight 2n cusp forms for Gamma_0( 91 ).

%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 11 2019: (Start)

%F G.f.: x*(1 + x)*(7 + 12*x + 8*x^2 + x^3) / ((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