35635

Appears in sequences

• Number of (n+1) X 2 binary arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.at n=18A186454
• A certain restricted class of posets on n points.at n=10A230090
• Number T(n,k) of set partitions of [n] such that the maximal absolute difference between the least elements of consecutive blocks equals k; triangle T(n,k), n>=0, 0<=k<=max(n-1,0), read by rows.at n=48A287215
• Number of set partitions of [n] such that the maximal absolute difference between the least elements of consecutive blocks equals two.at n=8A322875