A063203 Dimension of the space of weight 2n cuspidal newforms for Gamma_0( 23 ).

2, 5, 9, 13, 17, 19, 25, 27, 31, 35, 39, 41, 47, 49, 53, 57, 61, 63, 69, 71, 75, 79, 83, 85, 91, 93, 97, 101, 105, 107, 113, 115, 119, 123, 127, 129, 135, 137, 141, 145, 149, 151, 157, 159, 163, 167, 171, 173, 179, 181

Offset

1,1

Links

Table of n, a(n) for n=1..50.

William A. Stein, Dimensions of the spaces S_k^{new}(Gamma_0(N))

William A. Stein, The modular forms database

Index entries for linear recurrences with constant coefficients, signature (0,1,1,0,-1).

Formula

a(n) = a(n-2)+a(n-3)-a(n-5) for n>6. G.f.: x*(2 +5*x +7*x^2 +6*x^3 +3*x^4 -x^5)/((1 -x)^2*(1 +x)*(1 +x +x^2)). [Colin Barker, Sep 27 2012]

Crossrefs

Sequence in context: A114471 A060636 A050877 * A130244 A161569 A263086

Adjacent sequences: A063200 A063201 A063202 * A063204 A063205 A063206

Keyword

nonn

Author

N. J. A. Sloane, Jul 10 2001

Status

approved