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

Terms

a(0) =1a(1) =1a(2) =3a(3) =6a(4) =13a(5) =31a(6) =76a(7) =192a(8) =504a(9) =1351a(10) =3668a(11) =10082a(12) =27991a(13) =78335a(14) =220778a(15) =626141a(16) =1785593a(17) =5117179a(18) =14729826a(19) =42568767a(20) =123465517a(21) =359268141a(22) =1048541699a(23) =3068583485a(24) =9002849260a(25) =26474484680a(26) =78019959584a(27) =230381635121a(28) =681544367457