public class Organ {
	public static void main(String[] args) {

		// Set of organ pipes spanning one octave

		final double factor = Math.pow(2, 1.0/12.0); // twelfth root of 2
		double length = 100;

		for (int i = 0; i <= 12; ++i) {
			System.out.println(i + "\t" + length);
			length = length * factor; // length *= factor;
		}

		System.out.println();
		System.out.println("factor == " + factor);
	}
}