Number of permutations of [n] avoiding the pattern 214-3.
A200405
Number of permutations of [n] avoiding the pattern 214-3.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =107a(5) =583a(6) =3637a(7) =25548a(8) =199506a(9) =1714383a(10) =16075861a(11) =163346039a(12) =1787800653a(13) =20968763454a(14) =262377046698
External references
- oeis: A200405