Number of (n+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A255749

Number of (n+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =512a(1) =7765a(2) =51064a(3) =118925a(4) =196744a(5) =473630a(6) =739776a(7) =2509233a(8) =2833848a(9) =15683280a(10) =11443688a(11) =103505234a(12) =46550488a(13) =787249560a(14) =193199064a(15) =5867658716a(16) =807118704a(17) =47135689832a(18) =3371471992a(19) =363872055032a(20) =14120529208

External references