Number of partitions of [n] avoiding the pattern 231.
A220912
Number of partitions of [n] avoiding the pattern 231.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =202a(7) =858a(8) =3909a(9) =18822a(10) =94712a(11) =493834
External references
- oeis: A220912