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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =6a(6) =6a(7) =6a(8) =6a(9) =15a(10) =40a(11) =40a(12) =40a(13) =53a(14) =98a(15) =223a(16) =223a(17) =240a(18) =386a(19) =611a(20) =1236a(21) =1257a(22) =1459a(23) =2189a(24) =3314a(25) =6464a(26) =6891a(27) =8630a(28) =12280a(29) =17934