Expansion of Product_{k>0} (1 - x^k)^(4*k).

Terms

a(0) =1a(1) =-4a(2) =-2a(3) =16a(4) =13a(5) =-12a(6) =-78a(7) =-72a(8) =54a(9) =244a(10) =444a(11) =184a(12) =-543a(13) =-1592a(14) =-2106a(15) =-1040a(16) =2256a(17) =7360a(18) =11010a(19) =9096a(20) =-3000a(21) =-24484a(22) =-49358a(23) =-60888a(24) =-38432a(25) =32956a(26) =150792a(27) =275608a(28) =335573a(29) =231568