Expansion of Product_{i>0, j>0, k>0} 1/(1 - x^(i^2 + j^2 + k^2)).

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =0a(5) =0a(6) =4a(7) =0a(8) =0a(9) =7a(10) =0a(11) =3a(12) =14a(13) =0a(14) =9a(15) =23a(16) =0a(17) =21a(18) =45a(19) =3a(20) =48a(21) =72a(22) =12a(23) =96a(24) =124a(25) =39a(26) =180a(27) =204a(28) =105a(29) =327