Puzzle Description:

I believe the term is Phi (fee). I've forgotten the exact decimal but it is found repeatedly in the natural world. From the ratio of human body parts to the way a nautilus forms its shell to the amount of land vs. water on our planet....etc. etc. etc.!

#1: Tom O'Connell (sensei69) on Oct 30, 2010 [SPOILER]

i'm sure someone will come up wiff the figure, thx, Alison

1+sqrt 5 all divided by 2, or 1.618... worked with by both Fibonacci and Euler. I've used it in both rings and algebraic homomorphisms. Great puzzle! The nautilus is such an amazing structure!

Interesting.

great pattern, enjoyed doing your puzzle.

Thanks Everyone!

Beautiful shell

I love this ratio. Isn't it called a Fibonacci sequence?

And mine saved just now at "13:13:31" (7th and 12th primes!)

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