Number of words on {1,1,1,2,2,2,...,n,n,n} with longest increasing subsequence of length n.
A047910
Number of words on {1,1,1,2,2,2,...,n,n,n} with longest increasing subsequence of length n.
Terms
- a(0) =1a(1) =1a(2) =19a(3) =1306a(4) =195709a(5) =50775091a(6) =20117051281
External references
- oeis: A047910