779155977600domain: NAppears in sequencesLah numbers: a(n) = n!*binomial(n-1,6)/7!.at n=8A111597a(n) = binomial(n, floor(n/2))*FallingFactorial(n - 1, n - floor(n/2)).at n=15A343581a(n) = binomial(2*n, n - 1)*(2*n + 1)! / n!.at n=7A367776