Expansion of (chi(-x) * chi(-x^19))^(-2) in powers of x where chi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =9a(5) =14a(6) =22a(7) =32a(8) =46a(9) =66a(10) =93a(11) =128a(12) =176a(13) =238a(14) =319a(15) =426a(16) =562a(17) =736a(18) =960a(19) =1244a(20) =1602a(21) =2054a(22) =2620a(23) =3324a(24) =4203a(25) =5292a(26) =6634a(27) =8290a(28) =10322a(29) =12808