The FranklinGraph() command constructs the Franklin graph.

The Franklin graph is a nonplanar bipartite graph with 12 vertices and 18 edges.

$\mathrm{with}\left(\mathrm{GraphTheory}\right)\:$

$\mathrm{with}\left(\mathrm{SpecialGraphs}\right)\:$

$F≔\mathrm{FranklinGraph}\left(\right)$

$F≔\mathrm{Graph\; 1:\; an\; undirected\; graph\; with\; 12\; vertices\; and\; 18\; edges}$

$\mathrm{IsPlanar}\left(F\right)$

$\mathrm{false}$

$\mathrm{ChromaticNumber}\left(F\right)$

$2$

$\mathrm{DrawGraph}\left(F\right)$

"Franklin graph", Wikipedia. http://en.wikipedia.org/wiki/Franklin_graph

The GraphTheory[SpecialGraphs][FranklinGraph] command was introduced in Maple 2017.

For more information on Maple 2017 changes, see Updates in Maple 2017.