Number of (n+1) X 3 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.
A206015
Number of (n+1) X 3 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.
Terms
- a(0) =680a(1) =7688a(2) =87448a(3) =996840a(4) =11364568a(5) =129573608a(6) =1477339224a(7) =16844007528a(8) =192048333016
External references
- oeis: A206015