Number of permutations avoiding the consecutive pattern 23451.

A202222

Number of permutations avoiding the consecutive pattern 23451.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =119a(5) =708a(6) =4914a(7) =38976a(8) =347795a(9) =3448312a(10) =37608186a(11) =447452544a(12) =5767315785a(13) =80054392880

External references