1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
A210329
1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
Terms
- a(0) =406a(1) =11877a(2) =344659a(3) =10050240a(4) =293095459a(5) =8549740834a(6) =249408131339
External references
- oeis: A210329