Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.
A251297
Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.
Terms
- a(0) =67204a(1) =1221748a(2) =24846540a(3) =579830068a(4) =15595789732a(5) =475709341972
External references
- oeis: A251297