Number of inversion sequences of length n avoiding the consecutive pattern 201.
A328501
Number of inversion sequences of length n avoiding the consecutive pattern 201.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =118a(6) =684a(7) =4548a(8) =34036a(9) =282696a(10) =2577936a(11) =25589100a(12) =274539856a(13) =3164909164a(14) =39006958856a(15) =511759353776
External references
- oeis: A328501