Expansion of (1/q) * ((chi(q^3) * chi(-q^6)) / (chi(q) * chi(-q^2)))^4 in powers of q where chi() is a Ramanujan theta function.

A193522

Expansion of (1/q) * ((chi(q^3) * chi(-q^6)) / (chi(q) * chi(-q^2)))^4 in powers of q where chi() is a Ramanujan theta function.

Terms

    a(0) =1a(1) =-4a(2) =14a(3) =-36a(4) =85a(5) =-180a(6) =360a(7) =-684a(8) =1246a(9) =-2196a(10) =3754a(11) =-6264a(12) =10226a(13) =-16380a(14) =25804a(15) =-40032a(16) =61275a(17) =-92628a(18) =138452a(19) =-204804a(20) =300040a(21) =-435672a(22) =627356a(23) =-896400a(24) =1271525a(25) =-1791324a(26) =2507426a(27) =-3488472a(28) =4825531a(29) =-6638688

External references