Number of (n+1)X(n+1) 0..4 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.
A186483
Number of (n+1)X(n+1) 0..4 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.
Terms
- a(0) =625a(1) =839a(2) =17015a(3) =64680a(4) =575344a(5) =1759744a(6) =15145144a(7) =52024944a(8) =422063944a(9) =1535037344a(10) =11681382744a(11) =44716060144a(12) =324000643944
External references
- oeis: A186483