Number of n X n 0..5 symmetric arrays with every row summing to floor(n*5/2).
A213797
Number of n X n 0..5 symmetric arrays with every row summing to floor(n*5/2).
Terms
- a(0) =1a(1) =6a(2) =96a(3) =9522a(4) =4843626a(5) =13937940952
External references
- oeis: A213797