Number of 3*n X n 0..2 arrays with row sums 2 and column sums 6.
A172668
Number of 3*n X n 0..2 arrays with row sums 2 and column sums 6.
Terms
- a(0) =1a(1) =141a(2) =352128a(3) =6152037276
External references
- oeis: A172668
A172668
Number of 3*n X n 0..2 arrays with row sums 2 and column sums 6.