6,1

Table of n, a(n) for n=6..10.

Eric Weisstein's World of Mathematics, Tetrahedral Graph

Eric Weisstein's World of Mathematics, Maximal Independent Vertex Set

Eric Weisstein's World of Mathematics, Minimal Vertex Cover

Sequence in context: A210355 A210348 A055750 * A115189 A186933 A271650

Adjacent sequences: A290608 A290609 A290610 * A290612 A290613 A290614

nonn,more

Eric W. Weisstein, Aug 07 2017

a(9) from Eric W. Weisstein, Nov 02 2018

approved