Recently I'm interested to apply programming to maths. But with Project Euler down, the only resource I can think of at the moment is my textbooks, which unfortunately are really suited to programming. So, are there any communities out there that have math problem solving questions, etc?

Thanks

edit: examples like Actuary Tables (https://web.archive.org/web/20121005141734/http://xkcd.com/actuary.py.txt). Thanks again!