Half the number of (n+1)X(n+1) symmetric 0..5 arrays with no 2X2 subblock summing to 10.
A213694
Half the number of (n+1)X(n+1) symmetric 0..5 arrays with no 2X2 subblock summing to 10.
Terms
- a(0) =99a(1) =17499a(2) =16537086a(3) =83545858925
External references
- oeis: A213694