2928846

Appears in sequences

• Number of permutations of [n] with no strong fixed points.at n=10A052186
• Triangle read by rows: T(n,k) is the number of permutations of [n] having k strong fixed points (0 <= k <= n).at n=55A145878
• Triangle read by rows: T(n,k) is the number of permutations of [n] having k strong fixed blocks (see first comment for definition).at n=28A186373