53ed7
Division of the 7th harmonic into 53 equal parts (53ed7) is related to 19edo and 30edt, but with the 7/1 rather than the 2/1 being just. The octave is about 7.6923 cents stretched and the step size is about 63.5628 cents. The patent val has a generally sharp tendency for harmonics up to 16, with exception for 11th harmonic.