A density plot in the complex plane of the Bohemian eigenvalues of a sample of 50 million 4x4 "inverted checkerboard" matrices with entries sampled from the discrete uniform distribution on [-5, 5]. A "inverted checkerboard" matrix contains zeros on odd sub/super diagonals (i.e. the first sub- and super-diagonals, the third sub- and super-diagonals, etc.). Viewed on [-7-7i, 7+7i].
