659632

Appears in sequences

• Number of 3 X (2n+1) zero-sum arrays with entries -n,...,0,...,n.at n=7A002047
• Size of the largest set of transversals of the n X n matrix M defined by M_{ij} = i+j, where all transversals in the set must use the same set of symbols.at n=14A169970
• Number of maximum independent vertex sets in the n-triangular honeycomb queen graph.at n=21A289893