Costas arrays are sets of n points placed on a nxn checkerboard, in which each column contains only one point; these arrays possess the special mathematical property of having unique difference vectors for all pairs of points, and are used in the fields of computer graphics, experimental design and radar applications. One of the goals of research in this field is the enumeration of all existing Costas arrays for a given number of points.

Costas arrays are sets of n points placed on a nxn checkerboard, in which each column contains only one point; these arrays possess the special mathematical property of having unique difference vectors for all pairs of points, and are used in the fields of computer graphics, experimental design and radar applications. One of the goals of research in this field is the enumeration of all existing Costas arrays for a given number of points.