The Fibonacci sequence has to be thought of in these terms:
F₀, F₁, F₂, F₃, F₄, F₅, F₆, F₇, etc, etc
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Now:
F₀=0
F₁=1
The formula you use to get the other numbers is:
[tex]F_{n} = F_{n-1} + F_{n-2} [/tex]
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So:
[tex] F_{2} = F_{2-1} + F_{2-2} = F_{1} + F_{0} =1+0=1[/tex]
And:
[tex] F_{3}= F_{3-1} + F_{3-2} = F_{2} + F_{1} =1+1=2[/tex]
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If you continue using the formula, you should get a sequence that starts off like this:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, etc, etc
