It is known that
from these we can say that if
or vice versa.
The same is true for the relationship between (c and d) and (e and f)
I have found that by using permutations of the above.
From reasonably extensive computer modelling of n, it also appears that but I can't seem to relate that to the above. Is it obvious why and I'm just suffering brain-freeze?
Thanks for helping thaw me out