1-3-9-11-13-15 eikosany
A 15-odd-limit eikosany. This creates a scale of 1 65/64 13/12 55/48 11/9 715/576 5/4 143/108 65/48 11/8 13/9 143/96 55/36 13/8 5/3 55/32 65/36 11/6 15/8 143/72 2/1, with steps of 65/64 16/15 55/52 16/15 65/64 144/143 143/135 45/44 66/65 104/99 33/32 40/39 117/110 40/39 33/32 104/99 66/65 45/44 143/135 144/143. With 12 perfect fifths, but also a fair number of wolf ones and other close clusters of notes, this is another eikosany that can be used in both consonant and highly dissonant ways as long as you have an instrument that can handle this number of notes per octave and can keep track of which notes are mapped where.

! 1-3-9-11-13-15_Eikosany.scl ! 1 3 9 11 13 15 3-combination Eikosany 20 ! 26.841 138.572 235.676 347.407 374.249 386.313 485.980 524.886 551.317 636.617 689.890 733.721 840.527 884.358 937.631 1022.931 1049.362 1088.268 1187.935 1200