Number of 3Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns.
A203033
Number of 3Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns.
Terms
- a(0) =4a(1) =120a(2) =4740a(3) =191208a(4) =8536230a(5) =396419436a(6) =18828234948a(7) =912456343092
External references
- oeis: A203033