Number of n X 4 0..1 arrays with every one equal to some NW, E or S neighbor.
A202902
Number of n X 4 0..1 arrays with every one equal to some NW, E or S neighbor.
Terms
- a(0) =1a(1) =40a(2) =494a(3) =4892a(4) =51068a(5) =538672a(6) =5654616a(7) =59369072a(8) =623600944a(9) =6549786560a(10) =68792261728a(11) =722531010240
External references
- oeis: A202902