64295478

Appears in sequences

• Number of n X 2 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to at least one horizontal or vertical neighbor.at n=13A199584
• Number of ways to place 3 points on an n X n point grid so that no point is equally distant from two other points on the same row or the same column.at n=26A296997