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

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =17a(5) =42a(6) =107a(7) =275a(8) =715a(9) =1884a(10) =5009a(11) =13421a(12) =36224a(13) =98382a(14) =268657a(15) =737244a(16) =2032035a(17) =5622938a(18) =15615186a(19) =43505382a(20) =121570407a(21) =340639265a(22) =956861955a(23) =2694064938a(24) =7601455079a(25) =21490621769a(26) =60870280259a(27) =172707869088a(28) =490818655346