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

Terms

a(0) =1a(1) =-1a(2) =2a(3) =-2a(4) =3a(5) =-3a(6) =3a(7) =-2a(8) =-1a(9) =5a(10) =-13a(11) =22a(12) =-36a(13) =51a(14) =-68a(15) =82a(16) =-86a(17) =75a(18) =-31a(19) =-52a(20) =201a(21) =-421a(22) =732a(23) =-1125a(24) =1575a(25) =-2024a(26) =2344a(27) =-2370a(28) =1807a(29) =-327