G.f. A(x) satisfies A(x) = Product_{k>=1} (1 - x^k*A(x)).

Terms

a(0) =1a(1) =-1a(2) =0a(3) =1a(4) =-2a(5) =2a(6) =-1a(7) =-1a(8) =4a(9) =-9a(10) =16a(11) =-19a(12) =1a(13) =59a(14) =-158a(15) =229a(16) =-129a(17) =-297a(18) =1066a(19) =-1878a(20) =1992a(21) =-216a(22) =-4862a(23) =13912a(24) =-24258a(25) =25406a(26) =4162a(27) =-90120a(28) =233708a(29) =-359262