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

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =9a(5) =17a(6) =30a(7) =54a(8) =94a(9) =161a(10) =269a(11) =449a(12) =740a(13) =1200a(14) =1930a(15) =3083a(16) =4877a(17) =7650a(18) =11919a(19) =18444a(20) =28363a(21) =43341a(22) =65848a(23) =99523a(24) =149654a(25) =223901a(26) =333448a(27) =494427a(28) =729996a(29) =1073408