Number of (n+1) X (3+1) 0..3 arrays with every 2 X 2 subblock summing to a nonzero multiple of 3.
A251338
Number of (n+1) X (3+1) 0..3 arrays with every 2 X 2 subblock summing to a nonzero multiple of 3.
Terms
- a(0) =2450a(1) =24714a(2) =263824a(3) =3014066a(4) =36988354a(5) =486098916a(6) =6775415354a(7) =98891100062
External references
- oeis: A251338