Number of words on {1,1,2,2,...,n,n} with longest increasing subsequence of length < n.

A267532

Number of words on {1,1,2,2,...,n,n} with longest increasing subsequence of length < n.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =43a(4) =1879a(5) =102011a(6) =7235651a(7) =674641325a(8) =81537026047

External references