222630domain: NAppears in sequencesNumerators of approximations to e.at n=34A006258Numerators of "Farey fraction" approximations to e.at n=36A119014Apéry-like numbers for the constant 1/e: a(n) = (1/(n-1)!)*Sum_{k = 0..n-1} binomial(n-1,k)*(2*n-k)!.at n=5A143414