Number of (2+1)X(n+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254423
Number of (2+1)X(n+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =470a(1) =3279a(2) =25589a(3) =229652a(4) =2128339a(5) =19879926a(6) =186426904a(7) =1752614398a(8) =16501742450a(9) =155519360130
External references
- oeis: A254423