Expansion of Product_{k>=1} 1/(1-x^(4*k-3))^k.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =3a(7) =3a(8) =3a(9) =6a(10) =9a(11) =9a(12) =9a(13) =13a(14) =19a(15) =23a(16) =23a(17) =28a(18) =42a(19) =51a(20) =56a(21) =62a(22) =84a(23) =108a(24) =120a(25) =133a(26) =170a(27) =219a(28) =253a(29) =276