Number of 7 X 7 0..n symmetric arrays with all rows summing to floor(n*7/2).
A213805
Number of 7 X 7 0..n symmetric arrays with all rows summing to floor(n*7/2).
Terms
- a(0) =1a(1) =35150a(2) =133721189a(3) =46259653191
External references
- oeis: A213805