e/Simple magic square

Information
has gloss	eng: A simple magic square is the lowest of two basic classes of magic square. It has the minimum requirements for a square to be considered magic. All lines parallel to the edges, plus the two main diagonals must sum to the magic constant. S = \fracm(m^2+1)}2}.
lexicalization	eng: Simple magic square
instance of	(noun) a square matrix of n rows and columns; the first n^2 integers are arranged in the cells of the matrix in such a way that the sum of any row or column or diagonal is the same magic square