Number of 2 X n 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
A269290
Number of 2 X n 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
Terms
- a(0) =16a(1) =216a(2) =2124a(3) =19188a(4) =164556a(5) =1363572a(6) =11026764a(7) =87559668a(8) =685523916a(9) =5306911092a(10) =40706083404a(11) =309846524148
External references
- oeis: A269290