Mathematician Gauss left behind a trophy case of mathematical achievements to highlight on his tombstone, but above all he wanted a regular heptadecagon etched on it
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/mathematics/shapes/heptadecagon/tombstone/scientificamerican.com.md
https://www.scientificamerican.com/article/why-this-great-mathematician-wanted-a-heptadecagon-on-his-tombstone/