Expansion of (phi(x) * psi(-x))^4 in powers of x where phi(), psi() are Ramanujan theta functions.

Terms

a(0) =1a(1) =4a(2) =-2a(3) =-24a(4) =-11a(5) =44a(6) =22a(7) =-8a(8) =50a(9) =-44a(10) =-96a(11) =56a(12) =-121a(13) =-152a(14) =198a(15) =160a(16) =176a(17) =48a(18) =-162a(19) =88a(20) =-198a(21) =-52a(22) =22a(23) =-528a(24) =233a(25) =200a(26) =-242a(27) =-88a(28) =-176a(29) =668