Number of (n+1) X 4 0..2 arrays with no 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors or the same number of counterclockwise edge increases as its vertical neighbors.
A206671
Number of (n+1) X 4 0..2 arrays with no 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors or the same number of counterclockwise edge increases as its vertical neighbors.
Terms
- a(0) =1683a(1) =9318a(2) =57258a(3) =319698a(4) =1941084a(5) =11368056a(6) =70322310a(7) =422623254a(8) =2638207047a(9) =16083282720a(10) =100939297773a(11) =620371263126
External references
- oeis: A206671