Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3.
A251340
Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3.
Terms
- a(0) =72375a(1) =1487375a(2) =36988354a(3) =1151715397a(4) =43807665267
External references
- oeis: A251340