Fibonacci Sequences

[RJ Emery]

While a Fibonacci sequence is the sum of the previous two terms, what of sums of the preceeding n terms, and have such sequences (n > 2) been found to occur in the natural world?

[ktoz]

Lots of info online. Fibonacci sequence here (http://en.wikipedia.org/wiki/Fibonacci_number) and generalized Fibonacci sequence here (http://en.wikipedia.org/wiki/Generalizations_of_Fibonacci_numbers)

[RJ Emery]

Lots of info online. Fibonacci sequence here (http://en.wikipedia.org/wiki/Fibonacci_number) and generalized Fibonacci sequence here (http://en.wikipedia.org/wiki/Generalizations_of_Fibonacci_numbers)
Thank you for the references.