2,1

Table of n, a(n) for n=2..9.

Eric Weisstein's World of Mathematics, Connected Graph

Eric Weisstein's World of Mathematics, Vertex-Induced Subgraph

Eric Weisstein's World of Mathematics, White Bishop Graph

Cf. A289169, A290719.

Sequence in context: A140421 A176315 A290758 * A213794 A239979 A261361

Adjacent sequences: A290766 A290767 A290768 * A290770 A290771 A290772

nonn,more

Eric W. Weisstein, Aug 10 2017

a(8)-a(9) from Andrew Howroyd, Aug 15 2017

approved