3-7-13-15 by 21/13 bihexany

A 13-limit bihexany. This creates a scale of 1 105/104 15/14 13/12 65/56 5/4 3/2 21/13 45/26 7/4 13/7 15/8 2/1, with steps of 105/104 52/49 91/90 15/14 14/13 6/5 14/13 15/14 91/90 52/49 105/104 16/15. This cancels out many of the ratios in the base hexany to produce simpler ones, including a 3/2 above the root. Like the 3-7-13-15 by 4/3 bihexany, this expands it out to a greater detempered subset of negri, although in this case, it has one extra microtonal step and does not quite complete the full 1L 8s mos scale.

! 3-7-13-15_by_21/13_Bihexany.scl
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3 7 13 15 by 21/13 2-combination Hexany
12
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16.566
119.442
138.572
258.015
386.313
701.955
830.253
949.696
968.825
1071.701
1088.268
1200