Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically.

A254817

Number of (n+2)X(6+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) =833037a(1) =13380696a(2) =247721056a(3) =4043573364a(4) =59733054453a(5) =913402797416

External references