Number of permutations that avoid the generalized pattern 1234-5.

A071077

Number of permutations that avoid the generalized pattern 1234-5.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =119a(6) =705a(7) =4857a(8) =38142a(9) =336291a(10) =3289057a(11) =35337067a(12) =413698248a(13) =5241768017a(14) =71465060725

External references