1-3-5-9-13-15 eikosany

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Circle diagram.

A 15-odd-limit eikosany. This creates a scale of 1 65/64 13/12 9/8 39/32 5/4 13/10 45/32 117/80 3/2 13/8 27/16 9/5 117/64 15/8 39/20 2/1, with steps of 65/64 16/15 27/26 13/12 40/39 26/25 225/208 26/25 40/39 13/12 27/26 16/15 65/64 40/39 26/25 40/39. (3/2, 9/8, 13/8 and 39/32 appear twice, reducing it to a 16 note scale) With 6 of the notes crammed into one cluster near the root of the scale, this is quite lopsided, but it still has 10 notes with perfect fifths above them around the scale, including a full 5-limit diatonic scale, giving you more than enough options to compose recognisable tonal music with.

! 1-3-5-9-13-15_Eikosany.scl
!
1 3 5 9 13 15 3-combination Eikosany
16
!
26.841
138.572
203.910
342.482
386.313
454.213
590.223
658.123
701.955
840.527
905.864
1017.596
1044.437
1088.268
1156.168
1200