98371884

Appears in sequences

• Number of permutations of 4 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.at n=5A190830
• 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=3A190920
• 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=31A322013