Number of (n+1)X(2+1) 0..3 arrays with every 2X2 subblock summing to 4 5 6 7 or 8.
A251493
Number of (n+1)X(2+1) 0..3 arrays with every 2X2 subblock summing to 4 5 6 7 or 8.
Terms
- a(0) =2270a(1) =86946a(2) =3361296a(3) =130169514a(4) =5042543734a(5) =195351371872
External references
- oeis: A251493