Expansion of (theta_3 / theta_4)^3.

Terms

a(0) =1a(1) =12a(2) =72a(3) =304a(4) =1056a(5) =3240a(6) =9056a(7) =23520a(8) =57600a(9) =134332a(10) =300528a(11) =648720a(12) =1357184a(13) =2761800a(14) =5482944a(15) =10645664a(16) =20256768a(17) =37842264a(18) =69511272a(19) =125712624a(20) =224104896a(21) =394198912a(22) =684799776a(23) =1175834016a(24) =1996991488