3-5-7-11-13-15 eikosany
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A 15-odd-limit eikosany. This creates a scale of 1 143/140 15/14 13/12 11/10 65/56 33/28 143/120 5/4 143/112 13/10 11/8 39/28 3/2 11/7 13/8 143/84 11/6 13/7 55/28 2/1, with steps of 143/140 150/143 91/90 66/65 325/308 66/65 91/90 150/143 143/140 56/55 55/52 78/77 14/13 22/21 91/88 22/21 14/13 78/77 55/52 56/55. While it has 6 perfect fifths and a couple more usable ones flat by 105/104, it does also have many clusters of close comma steps which are very dissonant when played together, giving it more bad combinations of notes than good.
! 3-5-7-11-13-15_Eikosany.scl ! 3 5 7 11 13 15 3-combination Eikosany 20 ! 36.705 119.442 138.572 165.004 258.015 284.447 303.576 386.313 423.019 454.213 551.317 573.656 701.955 782.492 840.527 921.064 1049.362 1071.701 1168.805 1200