Number of (n+1) X (2+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0001 0011 or 0111.
A259421
Number of (n+1) X (2+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0001 0011 or 0111.
Terms
- a(0) =43a(1) =243a(2) =1366a(3) =7695a(4) =43347a(5) =244228a(6) =1376077a(7) =7753553a(8) =43687910a(9) =246163281a(10) =1387029593a(11) =7815349472a(12) =44036333771a(13) =248126951851
External references
- oeis: A259421