Number of permutations of 1..2*n+9 with no adjacent elements within n in value.

A179967

Number of permutations of 1..2*n+9 with no adjacent elements within n in value.

Terms

    a(0) =362880a(1) =5296790a(2) =88422296a(3) =1634227958a(4) =32096768008a(5) =649347224736

External references