! gradus9.scl
!
Intervals > 1 with Gradus = 9                                                   
 21
!
 7/4
 16/9
 9/5
 7/3
 12/5
 16/5
 15/4
 20/3
 27/4
 21/1
 64/3
 25/1
 28/1
 45/1
 60/1
 80/1
 81/1
 108/1
 144/1
 192/1
 256/1