Powers

Front 1

2^4

Back 1

16

Front 2

2^5

Back 2

32

Front 3

2^6

Back 3

64

Front 4

2^7

Back 4

128

Front 5

2^8

Back 5

256

Front 6

2^9

Back 6

512

Front 7

2^9

Back 7

512

Front 8

2^10

Back 8

1024

Front 9

13^2

Back 9

169

Front 10

14^2

Back 10

196

Front 11

15^2

Back 11

225

Front 12

15^2

Back 12

225

Front 13

20^2

Back 13

400

Front 14

3^3

Back 14

27

Front 15

4^3

Back 15

64

Front 16

5^3

Back 16

125

Front 17

3^3

Back 17

27

Front 18

3^4

Back 18

81

Front 19

4^3

Back 19

64

Front 20

4^4

Back 20

256

Front 21

4^5

Back 21

1024

Front 22

2^-3

Back 22

1/2^3, 1/8, .125