Number of 2Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns.
A203032
Number of 2Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns.
Terms
- a(0) =4a(1) =28a(2) =396a(3) =4904a(4) =57100a(5) =690204a(6) =8590508a(7) =107540900a(8) =1351412312a(9) =17089354228a(10) =217260030296
External references
- oeis: A203032