Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock summing to 5 6 or 7.
A251374
Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock summing to 5 6 or 7.
Terms
- a(0) =124a(1) =1048a(2) =9124a(3) =80296a(4) =709396a(5) =6276040a(6) =55551652a(7) =491795368a(8) =4354105588a(9) =38549885704a(10) =341311285636
External references
- oeis: A251374