Yes, thanks for spotting that, it should have been something similar. There are 2^{1431} colourings for a graph with 54 nodes, which was the limit mentioned in the longer article. In this article it should read 2^{1176} colourings for a graph with 49 nodes.

## Thanks!

^{1431}colourings for a graph with 54 nodes, which was the limit mentioned in the longer article. In this article it should read 2^{1176}colourings for a graph with 49 nodes.