9144576

Appears in sequences

• a(n) = A056623(n!).at n=14A056628
• Triangle T(s,t), s >= 1, 1 <= t <= s (see formula line).at n=53A059836
• Even refactorable numbers k such that the number r of odd divisors is odd, the number s of even divisors is even, both r and s are divisors of k and k is the first number for which the triple (r,s,t) occurs, where t is the number of divisors of k.at n=18A120359
• Triangle T(n,m) = coefficient of x^n in expansion of (x^2*cotan(x))^m = sum(n>=m, T(n,m) x^n * m!^2/n!^2).at n=40A199542
• a(n) = (n!/floor(1+n/2)!)^2.at n=9A329964
• Triangle read by rows: T(n, k) = floor(binomial(n, k - 1) * (k - 1)^(k - 1) * k *(n - k + 1)^(n - k) / 2).at n=43A369025
• Triangle read by rows, (2, 3)-Lah numbers.at n=10A371259
• Obverse convolution (n)**(n(n+1)/2); see Comments.at n=6A374892