766198

Appears in sequences

• Number of 5-element ordered antichains on an unlabeled n-element set; T_1-hypergraphs with 5 labeled nodes and n hyperedges.at n=3A056070
• Number of (n+1) X 2 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock differing from the number in all its horizontal and vertical neighbors.at n=12A205065