So: and then

Start by calculating values until you see a pattern:

For n= 2, n/2= 1 and so

For n= 3, n/2= 1.5 so

For n= 4, n/2= 2 so

For n= 5, n/2= 2.5 so

For n= 6, n/2= 3 so

For n= 7, n/2= 3.5 so

For n= 8, n/2= 4 so

Conjecture: if n is a power of 2 then . If then .