A 15-odd-limit dekany. This creates a scale of 1 15/14 9/8 135/112 9/7 11/8 165/112 11/7 99/56 15/8 2/1, with steps of 15/14 21/20 15/14 16/15 77/72 15/14 16/15 9/8 35/33 16/15. With lots of intervals that are slightly over the size of a 12edo semitone and one that is double that, this is essentially a detempered version of 11edo with a single note missing. As such, it completely misses any 5-limit perfect fifths or major thirds, making it quite strange harmonically, but is surprisingly familiar sounding melodically as long as you don't make any large leaps.

Circle diagram.
! 1-7-9-11-15_Dekany.scl
!
1 7 9 11 15 2-combination Dekany
10
!
119.442
203.910
323.352
435.084
551.317
670.760
782.492
986.402
1088.268
1200

Suggested keyboard mapping: Start on C, skipping the F and A notes.