G.f. satisfies A(x) = 1 + x*A(x) / (1 + x*A(x))^4.

Terms

a(0) =1a(1) =1a(2) =-3a(3) =-1a(4) =29a(5) =-44a(6) =-265a(7) =1114a(8) =1369a(9) =-19076a(10) =20388a(11) =250977a(12) =-875281a(13) =-2116594a(14) =19136754a(15) =-7765108a(16) =-306092007a(17) =830209808a(18) =3388957208a(19) =-22266676364a(20) =-8185922076a(21) =413223401045a(22) =-814031607979