Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 0101 or 1111.
A259519
Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 0101 or 1111.
Terms
- a(0) =120a(1) =1122a(2) =10148a(3) =93028a(4) =851604a(5) =7802386a(6) =71482990a(7) =654942820a(8) =6000746068a(9) =54980553426a(10) =503747889040
External references
- oeis: A259519