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A063128 Dimension of the space of weight 2n cusp forms for Gamma_0( 60 ). 1
7, 30, 54, 78, 102, 126, 150, 174, 198, 222, 246, 270, 294, 318, 342, 366, 390, 414, 438, 462, 486, 510, 534, 558, 582, 606, 630, 654, 678, 702, 726, 750, 774, 798, 822, 846, 870, 894, 918, 942, 966, 990, 1014, 1038, 1062, 1086, 1110, 1134 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..48.

William A. Stein, Dimensions of the spaces S_k(Gamma_0(N)).

William A. Stein, The modular forms database

FORMULA

Conjectures from Colin Barker, Jun 08 2019: (Start)

G.f.: x*(7 + 16*x + x^2) / (1 - x)^2.

a(n) = 2*a(n-1) - a(n-2) for n>3.

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

(End)

CROSSREFS

Sequence in context: A210107 A266604 A018831 * A063148 A116283 A139274

Adjacent sequences: A063125 A063126 A063127 * A063129 A063130 A063131

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 08 2001

STATUS

approved

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Last modified December 7 16:17 EST 2022. Contains 358667 sequences. (Running on oeis4.)