Twenty four equal divisions of the octave approximates the 11th and 13th harmonics decently well. An otonal/utonal example, a 4:5:6:7:9:11:13 chord:
2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | |
---|---|---|---|---|---|---|---|---|
Error (¢) | ±0.0 | -2.0 | -13.7 | +18.8 | +1.3 | -9.5 | -5.0 | -2.5 |
Degrees (\24) | 24 | 38 | 56 | 67 | 83 | 89 | 98 | 102 |
Notation from C1 | C2 | G2 | E3 | B3 | F4 | A4 | C♯5 | E♭5 |