Half the number of (n+1)X7 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
A210274
Half the number of (n+1)X7 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
Terms
- a(0) =1011912a(1) =958632858a(2) =910532241954
External references
- oeis: A210274