Before I go off to re-invent a thoroughly invented wheel, I thought I'd ask around for some existing module for computing binomial coefficient, hypergeometric coefficients, and other factorial-based combinatorial indices. I'm looking for something that can handle fairly large factorials (on the order of 10000!), using floating-point approximations as needed, and is smart about optimizations, memoizations, etc.
TIA! ~K -- http://mail.python.org/mailman/listinfo/python-list
