Number of 3*n X n 0..3 arrays with row sums 3 and column sums 9.
A172763
Number of 3*n X n 0..3 arrays with row sums 3 and column sums 9.
Terms
- a(0) =1a(1) =580a(2) =19546975
External references
- oeis: A172763
A172763
Number of 3*n X n 0..3 arrays with row sums 3 and column sums 9.