Half the number of (n+1)X6 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.
A209793
Half the number of (n+1)X6 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.
Terms
- a(0) =63300a(1) =11761044a(2) =2167312950a(3) =400252237467
External references
- oeis: A209793