1/4 the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences.
A210347
1/4 the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences.
Terms
- a(0) =40a(1) =13566a(2) =38415623a(3) =934012605398
External references
- oeis: A210347