Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254803
Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =2201616a(1) =4771368a(2) =11836406a(3) =34896603a(4) =105040512a(5) =253515215a(6) =434785178a(7) =1133168035a(8) =3388002996a(9) =9547411698a(10) =26675577140a(11) =69844593335a(12) =198216306984a(13) =551414962883
External references
- oeis: A254803