A contrived example of some functional techniques.

funcy.js

first = function (a) {
	return function (b) {
		return function (c) {
				if (c < 4) {
					return c * (b + a);
				} else {
					return ((first(a))(b))(c-1);
				}
		}
	}
}

n = 4

second = first(n);
third = second(n * 2);
answer = third(n * 3)
console.log(answer);