Number of 4*n X 4 0..2 arrays with row sums 3 and column sums 3*n.
A172686
Number of 4*n X 4 0..2 arrays with row sums 3 and column sums 3*n.
Terms
- a(0) =1344a(1) =34145664
External references
- oeis: A172686
A172686
Number of 4*n X 4 0..2 arrays with row sums 3 and column sums 3*n.