Expansion of Product_{n>=1} (1 - x^(4*n))/(1 - x^n)^4 in powers of x.

Terms

a(0) =1a(1) =4a(2) =14a(3) =40a(4) =104a(5) =248a(6) =560a(7) =1200a(8) =2474a(9) =4924a(10) =9520a(11) =17928a(12) =33008a(13) =59528a(14) =105408a(15) =183536a(16) =314744a(17) =532208a(18) =888382a(19) =1465208a(20) =2389808a(21) =3857456a(22) =6166096a(23) =9766576a(24) =15336816a(25) =23888844a(26) =36924656a(27) =56659296a(28) =86341664a(29) =130710104