Half the number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
A210268
Half the number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
Terms
- a(0) =35a(1) =5558a(2) =6028871a(3) =44678808183
External references
- oeis: A210268