222480

Appears in sequences

• Rencontres numbers: number of permutations of [n] with exactly 3 fixed points.at n=7A000449
• Triangle T(n,k) of rencontres numbers (number of permutations of n elements with k fixed points).at n=58A008290
• Triangle of rencontres numbers.at n=39A008291
• Triangle read by rows: T(n,k) = number of partial derangements, that is, the number of permutations of n distinct, ordered items in which exactly k of the items are in their natural ordered positions, for n >= 0, k = n, n-1, ..., 1, 0.at n=62A098825
• a(n) = 19683*n - 13716.at n=11A157666