1,4

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

Eric Weisstein's World of Mathematics, Graph Radius

Wikipedia, Distance (graph theory)

Column k=2 of A324239.

Sequence in context: A124426 A321394 A320956 * A307524 A066223 A088500

Adjacent sequences: A324058 A324059 A324060 * A324062 A324063 A324064

nonn,more

Andrew Howroyd, Sep 03 2019

approved