Number of (n+2) X (2+2) 0..1 arrays with every 3 X 3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally and vertically.
A253857
Number of (n+2) X (2+2) 0..1 arrays with every 3 X 3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally and vertically.
Terms
- a(0) =3264a(1) =30848a(2) =291392a(3) =2654464a(4) =22951616a(5) =196953728a(6) =1698464064a(7) =14584992256a(8) =125182611904
External references
- oeis: A253857