Number of nX6 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
A269287
Number of nX6 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
Terms
- a(0) =2592a(1) =1363572a(2) =544118148a(3) =193446959076
External references
- oeis: A269287