The most ubiquitous, and perhaps the most intriguing, number
pattern in mathematics is the Fibonacci sequence. In this simple
pattern beginning with two ones, each succeeding number is the sum
of the two numbers immediately preceding it (1, 1, 2, 3, 5, 8, 13,
21, ad infinitum). Far from being just a curiosity, this sequence
recurs in structures found throughout nature - from the arrangement
of whorls on a pinecone to the branches of certain plant... more...