183095

Appears in sequences

• Number of nX2 arrays containing 2 indistinguishable copies of 1..n with lexicographical ordering of rows strictly increasing and columns strictly decreasing.at n=7A180840
• T(n,k)=number of nXk arrays containing k indistinguishable copies of 1..n with lexicographical ordering of rows strictly increasing and columns strictly decreasing.at n=43A180843
• Number of transitive relations on an n-set with exactly three ordered pairs.at n=11A349927