128414

Appears in sequences

• Number of (n+1) X 4 binary arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.at n=19A186456
• Number of involutions avoiding the pattern 4231.at n=14A230556
• Central nonzero values of A231599.at n=19A269298
• Number of inequivalent leaf-colorings of planted achiral trees with n nodes.at n=20A318228