Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock summing to 6.
A183633
Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock summing to 6.
Terms
- a(0) =44a(1) =340a(2) =2300a(3) =14644a(4) =90524a(5) =551380a(6) =3333500a(7) =20077684
External references
- oeis: A183633