2291035domain: NAppears in sequencesNumber of nX4 binary arrays with each sum of a(1..i,1..j) no greater than i*j/2.at n=5A183405T(n,k)=Number of nXk binary arrays with each sum of a(1..i,1..j) no greater than i*j/2.at n=39A183407T(n,k)=Number of nXk binary arrays with each sum of a(1..i,1..j) no greater than i*j/2.at n=41A183407