66218360625
domain: N
Appears in sequences
- Number of permutations of 5 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.at n=5A190833
- 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=4A190920
- Number of arrangements of n 1's, n 2's, ..., n n's avoiding equal consecutive terms and introduced in ascending order.at n=5A321666
- 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=40A322013