Weight 1 for level N=20
From Sect. 21.1 we know that for primes p>=7 there are 9 new holomorphic eta products of weight 1 for G*(4p) and another 60 such eta products for G0(4p) Table 24.1 shows that the corresponding numbers of eta products are slightly larger for level N=45=20 and considerably larger for level N=43=12. In the present section we are going to discuss theta series identities for the eta products of weight 1 and level 20.