1,2
Table of n, a(n) for n=1..5.
Eric Weisstein's World of Mathematics, Graph Cycle
Eric Weisstein's World of Mathematics, Queen Graph
Sequence in context: A137693 A247822 A247823 * A201846 A116631 A212937
Adjacent sequences: A234623 A234624 A234625 * A234627 A234628 A234629
nonn
Eric W. Weisstein, Dec 28 2013
approved