92304
domain: N
Appears in sequences
- a(n) = n! * (1 + Sum_{j=1..n} (-1)^j/j).at n=9A024168
- Number of permutations on n letters that have only cycles of length 4 or less.at n=9A070945
- Numbers n such that 2*n*3^n - 1 is prime.at n=23A271956
- a(n) is a number of lattice points in 3D Cartesian grid between cube with edge length 2*n centered in origin and its inscribed sphere. Three pairs of the cube's faces are parallel to the planes XOY, XOZ, YOZ respectively.at n=29A303743
- Triangle read by rows: T(n,k) is the number of permutations in S_n for which all cycles have length <= k.at n=39A330858