192636

Appears in sequences

• Number of defective 4-colorings of an n X n 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..3 order.at n=10A229571
• Number of cells formed by connecting all the 4n points on the perimeter of an n X n square by straight lines; a(0) = 0 by convention.at n=13A255011