"use strict";
function sequence(start, step) {
	start = start - step;
	return function (){
		start = start + step;
		return start;

	};
}

	var generator = sequence(10, 3);
	var generator2 = sequence(7, 1);

	console.log(generator()); // 10
	console.log(generator()); // 13

	console.log(generator2()); // 7

	console.log(generator()); // 16

	console.log(generator2()); // 8