Number of nX7 zero-sum -1..1 arrays with rows and columns lexicographically nondecreasing.
A202032
Number of nX7 zero-sum -1..1 arrays with rows and columns lexicographically nondecreasing.
Terms
- a(0) =4a(1) =555a(2) =207562a(3) =108479344a(4) =54711391946
External references
- oeis: A202032