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

Terms

a(0) =1a(1) =-1a(2) =-2a(3) =-2a(4) =-1a(5) =1a(6) =5a(7) =11a(8) =17a(9) =26a(10) =36a(11) =35a(12) =20a(13) =-5a(14) =-65a(15) =-221a(16) =-510a(17) =-897a(18) =-1379a(19) =-2157a(20) =-3498a(21) =-5225a(22) =-6500a(23) =-6425a(24) =-4775a(25) =-1463a(26) =5951a(27) =25905a(28) =74833a(29) =173129