Number of (1+2) X (n+2) 0..2 arrays with no increasing sequence of length 3 vertically, diagonally downwards or antidiagonally downwards.
A234381
Number of (1+2) X (n+2) 0..2 arrays with no increasing sequence of length 3 vertically, diagonally downwards or antidiagonally downwards.
Terms
- a(0) =16584a(1) =406416a(2) =9995040a(3) =245837376a(4) =6045322368a(5) =148657436928
External references
- oeis: A234381