e/Redheffer matrix

Information
has gloss	eng: In mathematics, a Redheffer matrix, studied by , is a (0,1) matrix whose entries aij are 1 if i divides j or if j = 1; otherwise, aij = 0.
lexicalization	eng: Redheffer matrix
instance of	(noun) (mathematics) a rectangular array of quantities or expressions set out by rows and columns; treated as a single element and manipulated according to rules matrix