Number of permutations that avoid the generalized pattern 132-4.

A071075

Number of permutations that avoid the generalized pattern 132-4.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =107a(6) =585a(7) =3671a(8) =25986a(9) =204738a(10) =1776327a(11) =16824237a(12) =172701135a(13) =1909624371a(14) =22626612450a(15) =285982186662

External references