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218 equal divisions per octave
It contains very accurate ratios, here is the collection: 7/4, 11/8, 9/7, 8/7, 9/8, 10/9, 11/10, 17/16
Bold numbers are off within less than 0.1 step size
fraction:
3/2
4/3
5/4
8/5
5/3
6/5
7/4
8/7
10/9
9/5
9/8
16/9
steps in 218edo:
128
90
70
148
161
57
176
42
33
185
37
181

It's great for 2.9.7.17 subgroup, and good for 2.9.5.7.11.17 subgroup.

Tempers out 640000000000000000/635585924776181463 with patent 5, 7 and 9. This is the difference between three 7/4 ratios and sixteen 10/9 ratios stacked.

To handle accurate 3 along with everything mentioned, please explore 436edo.