Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A257423
Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =150016a(1) =367929a(2) =1557227a(3) =5985744a(4) =12316842a(5) =36423140a(6) =96141548a(7) =259492076a(8) =731002818a(9) =2006564512a(10) =5318291482a(11) =14692484638a(12) =40355053494a(13) =110377628368a(14) =302224479476a(15) =826432640142
External references
- oeis: A257423