Expansion of 1/(2 - Product_{k>=1} (1 - x^k)).

Terms

a(0) =1a(1) =-1a(2) =0a(3) =1a(4) =-1a(5) =1a(6) =-1a(7) =1a(8) =0a(9) =-2a(10) =4a(11) =-4a(12) =1a(13) =3a(14) =-5a(15) =4a(16) =-3a(17) =3a(18) =-1a(19) =-6a(20) =13a(21) =-12a(22) =2a(23) =9a(24) =-13a(25) =10a(26) =-6a(27) =6a(28) =-4a(29) =-9