The Musical Manifestation of Number Three

When the fundamental note is a, when one is a, e is the musical manifestation of number three. To find more perfect fifths, we just continue doubling. So counting one, two, three, one represents the fundamental note,. Two, the octave and tree the perfect fifth. Four is double two or one doubled twice? No, just as 400 forty is a hundred. Ten double twice. Harry e, does five give us a new note? Or does it repeat a note we have already seen? And how do you know this? How would you work that out?"