Number of (n+1) X 3 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.
A209891
Number of (n+1) X 3 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.
Terms
- a(0) =34a(1) =280a(2) =2304a(3) =19008a(4) =156800a(5) =1293568a(6) =10671616a(7) =88038400a(8) =726296576a(9) =5991780352a(10) =49430814720a(11) =407792893952
External references
- oeis: A209891