Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254190
Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =2908a(1) =20380a(2) =142088a(3) =968448a(4) =6170408a(5) =38010356a(6) =230428580a(7) =1379065312a(8) =8200183208a(9) =48612204096a(10) =287661718172
External references
- oeis: A254190