163386

Appears in sequences

• Number of permutations of 3 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.at n=5A190826
• Number of permutations of n copies of 1..5 introduced in order 1..5 with no element equal to another within a distance of 1.at n=2A190920
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 0 vertically.at n=12A207769
• Square array A(n,k), n >= 1, k >= 1, read by antidiagonals, where A(n,k) is the number of permutations of n copies of 1..k introduced in order 1..k with no element equal to another within a distance of 1.at n=23A322013