Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically.

A254813

Number of (n+2)X(2+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) =2703a(1) =15848a(2) =95110a(3) =522294a(4) =2691838a(5) =13380696a(6) =64480314a(7) =303930381a(8) =1410213321a(9) =6456146026a(10) =29274922610a(11) =131644498910a(12) =588051565327

External references