Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically.
A254818
Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically.
Terms
- a(0) =2977462a(1) =64480314a(2) =1555784900a(3) =32502418874a(4) =617600165386
External references
- oeis: A254818