Expansion of Product_{i>=1, j>=1, k>=1} (1 + x^(i*j*k))^(i*j*k).

Terms

a(0) =1a(1) =1a(2) =6a(3) =15a(4) =48a(5) =108a(6) =323a(7) =716a(8) =1868a(9) =4217a(10) =10137a(11) =22311a(12) =51477a(13) =110817a(14) =245260a(15) =519918a(16) =1114914a(17) =2318557a(18) =4854952a(19) =9923533a(20) =20335761a(21) =40941170a(22) =82365742a(23) =163413699a(24) =323589060a(25) =633429923a(26) =1236392498a(27) =2390718266a(28) =4606489839a(29) =8805346615