A063327 Dimension of the space of weight n cuspidal newforms for Gamma_1( 54 ).

-1, 22, 42, 64, 86, 106, 128, 150, 170, 192, 214, 234, 256, 278, 298, 320, 342, 362, 384, 406, 426, 448, 470, 490, 512, 534, 554, 576, 598, 618, 640, 662, 682, 704, 726, 746, 768, 790, 810, 832, 854, 874, 896, 918, 938, 960, 982, 1002, 1024

Offset

2,2

Links

Table of n, a(n) for n=2..50.

William A. Stein, Dimensions of the spaces S_k^{new}(Gamma_1(N))

William A. Stein, The modular forms database

Formula

From Colin Barker, Feb 24 2015: (Start)

a(n) = a(n-1)+a(n-3)-a(n-4) for n>6.

G.f.: -x^2*(x^4-23*x^3-20*x^2-23*x+1) / ((x-1)^2*(x^2+x+1)).

(End)

Crossrefs

Sequence in context: A026061 A138040 A154087 * A066957 A118602 A215146

Adjacent sequences: A063324 A063325 A063326 * A063328 A063329 A063330

Keyword

sign

Author

N. J. A. Sloane, Jul 14 2001

Status

approved