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

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =4a(5) =10a(6) =20a(7) =36a(8) =56a(9) =88a(10) =120a(11) =176a(12) =220a(13) =306a(14) =368a(15) =491a(16) =560a(17) =746a(18) =816a(19) =1058a(20) =1160a(21) =1450a(22) =1540a(23) =1982a(24) =2028a(25) =2520a(26) =2656a(27) =3232a(28) =3276a(29) =4116