Number of nX4 0..2 arrays with the row and column sums nondecreasing.
A203326
Number of nX4 0..2 arrays with the row and column sums nondecreasing.
Terms
- a(0) =15a(1) =510a(2) =15300a(3) =423595a(4) =10809576a(5) =261192161a(6) =6027116491a(7) =134485617080
External references
- oeis: A203326