3 

 4 

 5 



6 

 7 

 8 



9 

 10 

 11 



12 

 13 

 14 



15 

 16 

 17 



18 



19 

 20 



Appendix 3 

 2" and 4" for values of n from 3 to 20: 



2" 4" 



