Number of nX4 0..2 arrays with row sums equal and column sums equal.
A203560
Number of nX4 0..2 arrays with row sums equal and column sums equal.
Terms
- a(0) =3a(1) =33a(2) =177a(3) =5673a(4) =32613a(5) =513903a(6) =7343451a(7) =185804265a(8) =1849858773a(9) =30348858003a(10) =499616140191
External references
- oeis: A203560