Number of 3 X (2n+1) zero-sum arrays with entries -n,...,0,...,n.
A002047
Number of 3 X (2n+1) zero-sum arrays with entries -n,...,0,...,n.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =28a(4) =244a(5) =2544a(6) =35600a(7) =659632a(8) =15106128a(9) =425802176a(10) =14409526080a(11) =577386122880
External references
- oeis: A002047