T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically.

A253935

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally and vertically.

Terms

    a(0) =512a(1) =2440a(2) =2440a(3) =8392a(4) =8384a(5) =8392a(6) =28540a(7) =30184a(8) =30184a(9) =28540a(10) =91296a(11) =109666a(12) =124496a(13) =109666a(14) =91296a(15) =263476a(16) =299727a(17) =451721a(18) =451721a(19) =299727a(20) =263476a(21) =709704a(22) =756553a(23) =992616a(24) =1664470a(25) =992616a(26) =756553a(27) =709704a(28) =1850176a(29) =1786831

External references