E.g.f. 1/(2-cosh(x)) (even coefficients).

A094088

E.g.f. 1/(2-cosh(x)) (even coefficients).

Terms

    a(0) =1a(1) =1a(2) =7a(3) =121a(4) =3907a(5) =202741a(6) =15430207a(7) =1619195761a(8) =224061282907

External references