Number of permutations of 7 copies of 1..n with no element equal to another within a distance of 1.

A322095

Number of permutations of 7 copies of 1..n with no element equal to another within a distance of 1.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =339720a(4) =549023310936

External references