Number of words on {1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,...,n,n,n,n} avoiding the pattern 123.
A266739
Number of words on {1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,...,n,n,n,n} avoiding the pattern 123.
Terms
- a(0) =1a(1) =1a(2) =70a(3) =3199a(4) =173860a(5) =10203181a(6) =631326526a(7) =40553993125
External references
- oeis: A266739