25022880
domain: N
Appears in sequences
- 5th forward differences of factorial numbers A000142.at n=6A001689
- Number of permutations of {1,2,...,n} that have no even fixed points.at n=11A161132
- 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=36A161134
- Central terms of the triangle A116853.at n=5A246606
- Number of permutations of [n] that have no prime fixed points.at n=11A247978
- Number of acyclic orientations of the Turán graph T(n,6).at n=11A267386
- Seventh column of Euler's difference table in A068106.at n=10A280920