! C:\music\Scala22\scl\ptt.scl
!
Young's Prime Time Twins with 7/4, 9/8 and 3/2
 23
!
 521/512
 523/512
 269/256
 271/256
 137/128
 139/128
 281/256
 283/256
 569/512
 571/512
 9/8
 3/2
 7/4
 227/128
 229/128
 461/256
 463/256
 29/16
 59/32
 239/128
 241/128
 61/32
 31/16
 2/1