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A159050 Dimension of the space of weight 2 modular forms for Gamma_1(n). 1
0, 1, 1, 2, 3, 3, 5, 5, 7, 7, 10, 9, 13, 12, 16, 15, 20, 17, 24, 22, 28, 25, 33, 28, 39, 33, 42, 39, 49, 40, 55, 48, 60, 52, 72, 56, 75, 63, 80, 72, 90, 72, 98, 85, 104, 88, 115, 92, 128, 103, 128, 114, 143, 111, 160, 132, 156, 133, 174, 136, 185, 150, 192, 164, 216 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

COMMENTS

a(n) = A029937(n) + A029936(n) - 1.

LINKS

S. R. Finch, Modular forms on SL_2(Z)

W. A. Stein, Modular Forms: A Computational Approach.

Klaus Brockhaus, Table of n, a(n) for n = 1..1000

PROG

(MAGMA) [ Dimension(ModularForms(Gamma1(n), 2)) : n in [1..100] ]; // Klaus Brockhaus, Mar 11 2011

(Sage) def A159050(n): return dimension_modular_forms(Gamma1(n), k=2) # [D. S. McNeil, Mar 11 2011]

CROSSREFS

Cf. A029936, A029937, A111248.

Sequence in context: A093841 A091937 A113637 * A145834 A130006 A099609

Adjacent sequences:  A159047 A159048 A159049 * A159051 A159052 A159053

KEYWORD

nonn

AUTHOR

S. R. Finch (Steven.Finch(AT)inria.fr), Apr 03 2009

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Last modified February 14 10:43 EST 2012. Contains 205614 sequences.