There is only very basic info here: https://en.wikipedia.org/wiki/Project_Euler
This article is excellent. It mentions the creator, Colin Hughes, and the story behind the project, but it boils down to a passion project for him.
Leonhard Euler himself is an incredible figure and arguably the most prodigious contributor to mathematics throughout history. So much so that people started naming things discovered by him after the next person to have proved them.
https://en.wikipedia.org/wiki/List_of_topics_named_after_Leo...
Hmm. Given such a triangle, let m be the largest number in the triangle. For each x in the triangle, replace it with m - x. For the resulting triangle, solve it to give the shortest path using one of the well known network shortest path algorithms.
Makes me miss Google CodeJam though.
thornewolf•1h ago