13284311040domain: NAppears in sequencesa(n) = n*(n+2)*(n+4)*(n+6)*(n+8)*(n+10)*(n+12)*(n+14).at n=12A346515E.g.f. A(x) satisfies A(x) = exp( arcsinh(x * A(x)^2) ).at n=9A385440