Number of (n+1)X(n+1) 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.
A206189
Number of (n+1)X(n+1) 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.
Terms
- a(0) =124a(1) =18172a(2) =13173864a(3) =46704516192
External references
- oeis: A206189