Number of permutations of 9 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.
A321669
Number of permutations of 9 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2872754
External references
- oeis: A321669