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A063294
Dimension of the space of weight n cuspidal newforms for Gamma_1( 21 ).
0
-1, 5, 18, 30, 42, 52, 64, 76, 86, 98, 110, 124, 132, 144, 154, 170, 178, 192, 200, 216, 222, 238, 246, 264, 268, 284, 290, 310, 314, 332, 336, 356, 358, 378, 382, 404, 404, 424, 426, 450, 450, 472, 472, 496, 494, 518, 518, 544, 540, 564, 562
OFFSET
2,2
FORMULA
g.f.: x^2*(x^9 +2*x^8 +13*x^7 +11*x^6 +17*x^5 +19*x^4 +11*x^3 +13*x^2 +6*x -1) / ((x -1)^2*(x +1)^2*(x^2 -x +1)*(x^2 +1)). - Colin Barker, Feb 24 2015
CROSSREFS
Sequence in context: A322409 A287894 A140365 * A063141 A154609 A063125
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jul 14 2001
STATUS
approved