5-9-11-15 by 5/4 bihexany
A 15-odd-limit bihexany. This creates a scale of 1 25/24 11/10 55/48 11/9 5/4 11/8 3/2 55/36 5/3 11/6 15/8 2/1, with steps of 25/24 132/125 25/24 16/15 45/44 11/10 12/11 55/54 12/11 11/10 45/44 16/15. Since the base hexany has 3/2's and 6/5's, but no 5/4's, this expands it out in a way that gives it 6 notes with perfect fifths above them, all with either a 5-limit major, minor or both type of chord, at the cost of three comma steps that distinguish two notes that would be tempered together in porcupine temperament, requiring careful consideration of which close notes to use to avoid wolf intervals.

! 5-7-11-15_by_5/4_Bihexany.scl ! 5 7 11 15 by 5/4 2-combination Bihexany 12 ! 70.672 165.004 235.676 347.407 386.313 551.317 701.955 733.721 884.358 1049.362 1088.268 1200