Visualize the circle of fifths in different EDO tuning systems, or the circle of doublings in case of EDTs!
Numbers 12<n<100 such that the integer closest to nlog1.5/log2 is NOT coprime with n (and therefore there is no complete circle of fifths): 14, 15, 20, 21, 24, 25, 28, 30, 34, 35, 36, 38, 44, 48, 51, 52, 54, 57, 58, 60, 62, 66, 68, 72, 76, 78, 82, 84, 85, 86, 87, 92, 93, 96 Numbers 12<n<100 such that the integer closest to nlog2/log3 is NOT coprime with n (and therefore there is no complete circle of doublings): 15, 16, 22, 24, 26, 28, 30, 32, 33, 38, 40, 42, 44, 48, 50, 54, 55, 56, 57, 60, 64, 66, 70, 72, 76, 77, 80, 81, 82, 86, 88, 90, 92, 95, 98