This is a space of vector valued Siegel modular forms with real representation $\mathrm{Det}^{ 17}\otimes\mathrm{Sym}^{ 30 }$. The following table gives the dimensions of various subspaces of $M_{17, 30}(\mathrm{Sp}(4, \mathbb{Z}))$.
Total | 67 |
Non cusp | 0 |
Cusp | 67 |