Number of nX6 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
A269095
Number of nX6 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
Terms
- a(0) =1620a(1) =889056a(2) =300056400a(3) =86415197088
External references
- oeis: A269095