The Fibonacci sequence is well known to mathematicians and anybody at all interested in codes and ciphers. This is how it starts:

As you can easily work out for yourself, each number is the sum of the two preceding numbers. It's that simple…..
Note – it may help in a devious sort of way if you plot the above co-ords into MemoryMap.
Please do not give away in your log or in person to other cachers how you calculated the location.