Expansion of ( Sum_{k>=0} k^2 * q^(k^2) )^3.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =0a(6) =12a(7) =0a(8) =0a(9) =48a(10) =0a(11) =27a(12) =64a(13) =0a(14) =216a(15) =0a(16) =0a(17) =432a(18) =48a(19) =243a(20) =0a(21) =384a(22) =972a(23) =0a(24) =768a(25) =0a(26) =864a(27) =804a(28) =0a(29) =3456