287250480

Appears in sequences

• 6th differences of factorial numbers.at n=6A023043
• Number of standard permutations of [ a_1..a_n b_1..b_n ] (b_i is not immediately followed by a_i, for all i).at n=6A033815
• Number of permutations of {1,2,...,n} that have no odd fixed points.at n=12A161131
• Number of permutations of {1,2,...,n} that have no even fixed points.at n=12A161132
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having exactly k even fixed points (0 <= k <= floor(n/2)).at n=42A161134
• Number of acyclic orientations of the Turán graph T(n,6).at n=12A267386
• Seventh column of Euler's difference table in A068106.at n=11A280920
• Number A(n,k) of acyclic orientations of the Turán graph T(k*n,n); square array A(n,k), n>=0, k>=1, read by antidiagonals.at n=42A372326