Number of n X 3 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
A269284
Number of n X 3 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
Terms
- a(0) =60a(1) =2124a(2) =62748a(3) =1698732a(4) =43674876a(5) =1085203980a(6) =26317946844a(7) =626778812268
External references
- oeis: A269284