Expansion of psi(x^4) / chi(-x)^2 in powers of x where psi(), chi() are Ramanujan theta functions.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =10a(5) =16a(6) =25a(7) =38a(8) =55a(9) =80a(10) =115a(11) =160a(12) =223a(13) =306a(14) =415a(15) =560a(16) =747a(17) =988a(18) =1301a(19) =1700a(20) =2206a(21) =2850a(22) =3661a(23) =4676a(24) =5950a(25) =7536a(26) =9500a(27) =11936a(28) =14936a(29) =18620