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

Terms

a(0) =1a(1) =2a(2) =5a(3) =12a(4) =30a(5) =79a(6) =217a(7) =615a(8) =1789a(9) =5315a(10) =16054a(11) =49139a(12) =152056a(13) =474825a(14) =1494245a(15) =4733780a(16) =15084326a(17) =48314504a(18) =155459331a(19) =502270013a(20) =1628784446a(21) =5299630868a(22) =17296306669a(23) =56607473796a(24) =185740962586a(25) =610896675767