696624domain: NAppears in sequencesa(n) = floor(exp(15/23) * n!).at n=8A030814a(n) = Sum_{1 <= x_1 <= x_2 <= x_3 <= x_4 <= x_5 <= n} gcd(x_1, x_2, x_3 , x_4, x_5, n).at n=35A343519