Number of 7Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns.
A203037
Number of 7Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns.
Terms
- a(0) =4a(1) =20228a(2) =77256180a(3) =539443637988
External references
- oeis: A203037