Number of permutations avoiding the consecutive pattern 45123.

A202231

Number of permutations avoiding the consecutive pattern 45123.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =119a(5) =708a(6) =4914a(7) =38980a(8) =347862a(9) =3449292a(10) =37622348a(11) =447662376a(12) =5770553184a(13) =80106726784

External references