Expansion of b(q)^3 - (1/3)*c(q)^3 in powers of q where b(), c() are cubic AGM theta functions.

Terms

a(0) =1a(1) =-18a(2) =0a(3) =-90a(4) =-234a(5) =0a(6) =-216a(7) =-900a(8) =0a(9) =-738a(10) =-1296a(11) =0a(12) =-1170a(13) =-3060a(14) =0a(15) =-1728a(16) =-3690a(17) =0a(18) =-2160a(19) =-6516a(20) =0a(21) =-4500a(22) =-6480a(23) =0a(24) =-3672a(25) =-10818a(26) =0a(27) =-6570a(28) =-11700a(29) =0