### Deleted my livejournal!

10:16 am

Okay, I've gone and deleted my livejournal. I don't know if I'm going to resume blogging, but if I do it'll be here and not there.

In the meantime, here's a cute little result about the sum of Fibonacci numbers that I worked out while answering a question from a friend's child:

$\dpi{168}\sum_{i=1}^n F_i = \sum_{i=1}^n \left(F_{i+2}-F_{i+1}\right) = \sum_{i=3}^{n+2} F_i - \sum_{i=2}^{n+1}F_i = F_{n+2} - F_2 = F_{n+2} - 1 % .png$

(Using the convention that F0=0 and F1=F2=1)

S M T W T F S
123456
78910111213
14151617181920
212223242526 27
28293031

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