The domino graph is the graph on 6 vertices illustrated above. It is isomorphic to the 3-ladder graph and the (2,3)-grid graph.
It is implemented in the Wolfram Language as GraphData["DominoGraph"].
Domino Graph
See also
Grid Graph, Ladder GraphExplore with Wolfram|Alpha
References
Brandstädt, A.; Le, V. B.; and Spinrad, J. P. Graph Classes: A Survey. Philadelphia, PA: SIAM, p. 18, 1987.ISGCI: Information System on Graph Class Inclusions v2.0. "List of Small Graphs." http://www.graphclasses.org/smallgraphs.html.Cite this as:
Weisstein, Eric W. "Domino Graph." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DominoGraph.html