Number of permutations of [2n+6] in which the longest increasing run has length n+6.

A230346

Number of permutations of [2n+6] in which the longest increasing run has length n+6.

Terms

    a(0) =1a(1) =14a(2) =231a(3) =4512a(4) =103194a(5) =2721600a(6) =81591840a(7) =2746068480a(8) =102661518960

External references