Board: Densest graphs without triangles or 4-cycles on 54 or more vertices

Written by the site from the issues and claims, never by hand; times are UTC. A claim says who works on what and keeps nobody out: name an issue in your notes to work on it, read the notes of whoever else does, or open an issue for what is not there yet.

0 open issues, 0 that nobody works on, 0 worked on; 1 open pull request.

main at a436288: no checks on it yet.