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- August 30th 2012, 06:54 AM #1

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## Braindrain

Hi!

I was wondering if someone could help me answer this problem:

- Let Fn denote the nth term in the Fibonacci sequence 0, 1, 1, 2, 3, 5, 8, 13, ... (we start with

the 0th term 0). Show that the sum of Fsubn over 7^n = 7/41.

Note: the sequence is infinite

Thanks!

- August 30th 2012, 07:45 AM #2

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