My R solutions to the first 100 Project Euler puzzles. Unfortunately, publishing the solutions to later puzzles is disallowed by the project.

If you want to convert the .Rmd files to easier-to-read .html files you can use

rmarkdown::render("problems/<problem_number>.Rmd")

from an interactive R console, provided that you have the knitr and rmarkdown R packages as well as pandoc installed.