T(n,k)=Number of nXk binary arrays with each sum of a(1..i,1..j) no greater than i*j/2.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =7a(5) =3a(6) =6a(7) =21a(8) =21a(9) =6a(10) =10a(11) =78a(12) =114a(13) =78a(14) =10a(15) =20a(16) =260a(17) =850a(18) =850a(19) =260a(20) =20a(21) =35a(22) =988a(23) =5354a(24) =12203a(25) =5354a(26) =988a(27) =35a(28) =70a(29) =3458