Words of length n over the alphabet {0,...,n-1} that avoid the pattern 1122.
A239370
Words of length n over the alphabet {0,...,n-1} that avoid the pattern 1122.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =27a(4) =250a(5) =2915a(6) =40806a(7) =664944
External references
- oeis: A239370