Number of n X 4 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
A269048
Number of n X 4 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
Terms
- a(0) =60a(1) =360a(2) =3078a(3) =24192a(4) =183072a(5) =1350672a(6) =9779808a(7) =69793968a(8) =492374976a(9) =3441051984a(10) =23861339424a(11) =164375084016
External references
- oeis: A269048