E.g.f. satisfies A(x) = exp( x*A(x) / (1 - x^2*A(x)^2) ).

A376558

E.g.f. satisfies A(x) = exp( x*A(x) / (1 - x^2*A(x)^2) ).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =22a(4) =245a(5) =3576a(6) =65527a(7) =1449904a(8) =37596393a(9) =1118442880a(10) =37559084651

External references