1/4 of the number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having one, two or three distinct clockwise edge differences.
A210348
1/4 of the number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having one, two or three distinct clockwise edge differences.
Terms
- a(0) =40a(1) =431a(2) =4615a(3) =49484a(4) =530580a(5) =5689274a(6) =61005068a(7) =654148428a(8) =7014344012a(9) =75213872216a(10) =806508362752
External references
- oeis: A210348