# Revision history [back]

### Computing the dimensions of spaces of modular & cusp forms

In OEIS A159634 Steven Finch gave the following MAGMA snippet to compute the

coefficient for dimensions of spaces of modular & cusp forms of weight k/2, level 4n and trivial character, where k >= 5 is odd.

[[4*n, (Dimension(HalfIntegralWeightForms(4*n, 7/2)) +
Dimension(CuspidalSubspace(HalfIntegralWeightForms(4*n, 5/2))))/2] : n in [1..70]];


How can this sequence be computed with Sage?

Note that this question is related to a conjecture of Enrique Pérez Herrero.

### Computing the dimensions of spaces of modular & cusp forms

In OEIS A159634 Steven Finch gave the following MAGMA snippet to compute the

coefficient for dimensions of spaces of modular & cusp forms of weight k/2, level 4n and trivial character, where k >= 5 is odd.

[[4*n, (Dimension(HalfIntegralWeightForms(4*n, 7/2)) +
Dimension(CuspidalSubspace(HalfIntegralWeightForms(4*n, 5/2))))/2] : n 5/2))))/2]:n in [1..70]];


How can this sequence be computed with Sage?

Note that this question is related to a conjecture of Enrique Pérez Herrero.