Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock summing to 4 5 6 7 or 8.
A251492
Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock summing to 4 5 6 7 or 8.
Terms
- a(0) =186a(1) =2270a(2) =27844a(3) =341718a(4) =4194002a(5) =51474508a(6) =631765770a(7) =7753896830a(8) =95166467620
External references
- oeis: A251492