2467007773
domain: N
Appears in sequences
- a(n) = n*a(n-1) + (n-1)*a(n-2), a(0) = 1, a(1) = 1.at n=12A000255
- Numerator of Sum_{k=0..n} (-1)^k/k!.at n=14A053557
- Bisection of A000255.at n=6A100444
- Number of permutations of {1,2,...,n} in which the fixed points and the non-fixed points alternate.at n=25A162969
- Numerator of n!*Sum((-1)^k/k!, k=0..n)/(n-1)^n.at n=12A178453