1-5-9-13 stellated hexany
A 13-limit stellated Hexany. This creates a scale of 1 65/64 9/8 585/512 5/4 45/32 13/8 117/64 2/1, with steps of 65/64 72/65 65/64 128/117 9/8 52/45 9/8 128/117. This only adds two notes to the base hexany, and they are bad ones, not decreasing the size of the largest step while adding extra comma steps of 65/64 that increase the amount of dissonance possible, making this scale decidedly xenharmonic in sound when using all of it despite containing half of the 5-limit diatonic scale.

! 1-5-9-13_Stellated_Hexany.scl ! 1 5 9 13 1-3-combination Hexany 8 ! 26.841 203.910 230.751 386.313 590.223 840.527 1044.437 1200
Suggested keyboard mapping: C C# D D# E F# G# A# C.