Number of permutations of [n] with exactly three (possibly overlapping) occurrences of the consecutive pattern 3412.

A264322

Number of permutations of [n] with exactly three (possibly overlapping) occurrences of the consecutive pattern 3412.

Terms

    a(0) =1a(1) =48a(2) =1520a(3) =38452a(4) =869740a(5) =18720732a(6) =396975296a(7) =8458711900a(8) =183197270195

External references