Number of 4*n X n 0..2 arrays with row sums 3 and column sums 12.
A172680
Number of 4*n X n 0..2 arrays with row sums 3 and column sums 12.
Terms
- a(0) =0a(1) =70a(2) =358198369
External references
- oeis: A172680
A172680
Number of 4*n X n 0..2 arrays with row sums 3 and column sums 12.