-130880766192domain: ZAppears in sequencesExpansion of the modular form of level 4 and weight 1/2.at n=28A013953Exponents a(1), a(2), ... such that theta series of E_8 lattice, 1 + 240 q + 2160 q^2 + ... (A004009) is equal to (1-q)^a(1) (1-q^2)^a(2) (1-q^3)^a(3) ...at n=4A110163