1,2

Resistance-equivalent graphs first exist for n = 9.

Table of n, a(n) for n=1..10.

Eric Weisstein's World of Mathematics, Resistance-Equivalent Graphs

a(n) + A178999(n) = A000088(n). - R. J. Mathar, Aug 07 2017

Cf. A178999

Sequence in context: A076318 A046750 A076319 * A076320 A076321 A000088

Adjacent sequences: A178941 A178942 A178943 * A178945 A178946 A178947

nonn,hard

Eric W. Weisstein, Dec 30 2010

a(10) from Eric W. Weisstein, Jan 03 2011

approved