Number of (n+1) X 4 0..3 arrays with every 2 X 2 subblock summing to 6.
A183636
Number of (n+1) X 4 0..3 arrays with every 2 X 2 subblock summing to 6.
Terms
- a(0) =452a(1) =952a(2) =2300a(3) =6136a(4) =17612a(5) =53512a(6) =170300a(7) =563416a(8) =1926572a(9) =6776872a(10) =24422300a(11) =89839096a(12) =336216332a(13) =1276265032a(14) =4900898300a(15) =18994385176a(16) =74156470892a(17) =291175781992
External references
- oeis: A183636