node package manager
Love JavaScript? Your insights can make it even better. Take the 2017 JavaScript Ecosystem Survey ยป

binomial

binomial.js is a simple module for creating binomial coefficients. It includes memoization by default.

Usage with memoization:

var n_choose_k = binomial.get(n, k);

Usage without memoization:

var n_choose_k = binomial.get_no_memo(n, k);