Number of nX3 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three no more than once.
A269138
Number of nX3 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three no more than once.
Terms
- a(0) =60a(1) =1164a(2) =18556a(3) =275796a(4) =3924212a(5) =54199284a(6) =732561916a(7) =9740150372a(8) =127846717716
External references
- oeis: A269138