[omaranto]

This article was "reprinted" from the original at Quanta Magazine. The original article has the correct answer of q(q-1)^3. (It was probably corrected after Wired "reprinted" it.)

https://www.quantamagazine.org/a-path-less-taken-to-the-peak...

[_asummers]

Indeed. At the bottom:

> Correction June 27, 2017: The original version of this article included an error in the calculation of the chromatic polynomial of a rectangle.