18afdo

← 17afdo

18afdo

19afdo →

Prime factorization	2 × 32
Fifth	27/18 (701.955c)

18afdo (arithmetic frequency division of the octave), or 18odo (otonal division of the octave), divides the octave into 18 parts of 1/18 each. As a scale it may be known as mode 18 of the harmonic series or the Over-18 scale.