Expansion of (chi(-x) / chi^3(-x^3))^2 in powers of x where chi() is a Ramanujan theta function.

Terms

a(0) =1a(1) =-2a(2) =1a(3) =4a(4) =-8a(5) =2a(6) =14a(7) =-24a(8) =6a(9) =38a(10) =-63a(11) =16a(12) =92a(13) =-150a(14) =36a(15) =208a(16) =-329a(17) =78a(18) =440a(19) =-684a(20) =160a(21) =884a(22) =-1358a(23) =312a(24) =1710a(25) =-2592a(26) =590a(27) =3196a(28) =-4796a(29) =1082