1,5

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Fiveleaper Graph

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

Sequence in context: A266156 A054947 A071900 * A145406 A307924 A263387

Adjacent sequences: A321244 A321245 A321246 * A321248 A321249 A321250

nonn,more

Eric W. Weisstein, Nov 01 2018

approved