A063354 Dimension of the space of weight n cuspidal newforms for Gamma_1( 81 ).

-1, 164, 356, 548, 740, 932, 1124, 1316, 1508, 1700, 1892, 2084, 2276, 2468, 2660, 2852, 3044, 3236, 3428, 3620, 3812, 4004, 4196, 4388, 4580, 4772, 4964, 5156, 5348, 5540, 5732, 5924, 6116, 6308, 6500, 6692, 6884, 7076, 7268, 7460

Offset

2,2

Links

Table of n, a(n) for n=2..41.

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 25 2016: (Start)

a(n) = 2*a(n-1)-a(n-2) for n>4.

G.f.: -x^2*(1-166*x-27*x^2) / (1-x)^2.

(End)

Crossrefs

Sequence in context: A240255 A045006 A245386 * A240248 A105653 A233997

Adjacent sequences: A063351 A063352 A063353 * A063355 A063356 A063357

Keyword

sign

Author

N. J. A. Sloane, Jul 14 2001

Status

approved