Number of permutations of 1..2*n+8 with no adjacent elements within n in value.

A179966

Number of permutations of 1..2*n+8 with no adjacent elements within n in value.

Terms

    a(0) =40320a(1) =479306a(2) =6564318a(3) =99133496a(4) =1572313392a(5) =25415753280

External references