Expansion of g.f. A(x) satisfying 0 = Sum_{n=-oo..+oo} x^n * (1 - x^n/A(-x))^(n+2).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =12a(5) =27a(6) =57a(7) =123a(8) =280a(9) =666a(10) =1614a(11) =3955a(12) =9733a(13) =23949a(14) =58967a(15) =145844a(16) =363137a(17) =910339a(18) =2295192a(19) =5811070a(20) =14754567a(21) =37542078a(22) =95715596a(23) =244567665a(24) =626388406a(25) =1608131393a(26) =4137707994a(27) =10667045757a(28) =27546269363a(29) =71241831762