OK, seems you still have a ways to go so I'll try to help out.
I'm guessing the formula you mean is the golden ratio or divine proportion.
I'm no math whiz so I can't offer you an easy to read, accurate description of it really. When I read this Wiki entry just now it kind of destroyed
my thoughts on what the ratio actually is. I always thought that if you drew a rectangle, squared it, and then squared the new rectagle, ect... you
would achieve a golden spiral, but I guess it needs to be an exact size rectangle to begin with to get a true golden spiral, otherwise you just get
aproximations. Also, many of the forms in nature are just aproximations as well and not exact replications.
The Fibonacci numbers are much like this ratio. After starting with two numbers you can create a number sequence by adding the two previous
numbers.(0,1,1,2,3,5,8,13,21,34,ect...) By using these numbers as proportions, you can create an approximation of the golden spiral.
Since you mentioned da Vinci, here is one of his most famous works involving a similar proportion in regards to the human form.
Any of that ring a bell?
If you are interested, you sould check out the movie pi, it's a black and white indie film about a math whiz searching for the true number of pi in
order to find patterns in the stock market. It's a pretty intense film, one of my favorites. He goes into a few descriptions about the things above
and more that are pretty rad. Ultimately he is beeing consumed in his search for meaning.
I guess I wouldn't be too quick to jump to the conclusion of outside interference for this formula, people have been fascinated with beauty and
proportion for a very, very long time. While I will agree that there is a lot we don't know about the past, when something is all around you someone
is bound to take notice.
One last thing I have to add, I have heard the Orions Belt theory and read a couple books on the topic as well as many opinions against it and I
don't think it is a fact by any means at this point. Also, as far as I knew it was only the Giza pyramids that were said to line up to the belt. Many
other sites are thought to line up with other star clusters though. "Heavens Mirror" by Hancock has pictures of sites and theories regarding this,
but be warned I've heard much of his work blown apart on this and other sites. I really don't believe much of it myself anymore considering the
counter evidence in many of the cases. I do however feel that there was a fascination with the stars and the workings of the universe. To what extent
their knowledge was we may never fully know.