1,1

Table of n, a(n) for n=1..4.

Eric Weisstein's World of Mathematics, Independent Vertex Set

Eric Weisstein's World of Mathematics, Odd Graph

Eric Weisstein's World of Mathematics, Vertex Cover

Sequence in context: A023175 A276740 A006688 * A018389 A334336 A092932

Adjacent sequences: A292708 A292709 A292710 * A292712 A292713 A292714

nonn,more

Eric W. Weisstein, Sep 21 2017

approved