Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically.
A254914
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically.
Terms
- a(0) =512a(1) =19890a(2) =1041262a(3) =28576911a(4) =549282376a(5) =7539746842a(6) =82012007541
External references
- oeis: A254914