Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock having one, three or four distinct clockwise edge differences.
A209953
Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock having one, three or four distinct clockwise edge differences.
Terms
- a(0) =71a(1) =567a(2) =4521a(3) =36057a(4) =287559a(5) =2293335a(6) =18289737a(7) =145863801a(8) =1163288871a(9) =9277428663a(10) =73989087849a(11) =590075690265
External references
- oeis: A209953