We derive closed formulas for the energy of circulant graphs generated by and , where is an integer. We also find a formula for the energy of the complete graph without a Hamilton cycle.
Justine Louis. "A Formula for the Energy of Circulant Graphs with Two Generators." J. Appl. Math. 2016 1 - 4, 2016. https://doi.org/10.1155/2016/1793978