Expansion of (-1 + Product_{k>=1} 1 / (1 + (-x)^k))^6.

Terms

a(0) =1a(1) =0a(2) =6a(3) =6a(4) =21a(5) =36a(6) =71a(7) =132a(8) =222a(9) =392a(10) =633a(11) =1038a(12) =1629a(13) =2544a(14) =3885a(15) =5842a(16) =8691a(17) =12738a(18) =18494a(19) =26520a(20) =37722a(21) =53132a(22) =74235a(23) =102882a(24) =141579a(25) =193506a(26) =262713a(27) =354552a(28) =475749a(29) =634932