2193664790

Appears in sequences

• a(n) = Sum_{k=1..n} ((k-1)!)^2*Stirling2(n,k)^2.at n=7A048163
• Number of permutations of length n within distance 7.at n=14A154656
• Number of acyclic orientations of the Turán graph T(n,2).at n=14A266695
• Poly-Bernoulli numbers B_n^(k) with k = -7.at n=7A283813
• Number of permutations of [n] within distance floor(n/2) of a fixed permutation.at n=14A306267
• Number A(n,k) of acyclic orientations of the complete tripartite graph K_{n,n,k}; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=35A372254