# Factors of the form N^2 - 3N +1

1. Jan 12, 2006

### ramsey2879

I noted the following relation for the form $$F_{n} = n^{2}-3n+1$$
let $$p_n$$ be any whole factor of $$F_n$$ and $$p_{n}^{'}$$ be the quotient. The following relation then holds

[tex]\frac{F_{n}}{p} * \frac{F_{(n+p)}}{p} = F_{(n+p_{n}^{'})}

A trivial example would be to let p = 1. Then
[tex] F_{n} * F_{(n+1)} = F_{(n+F_{n})}

Is this something that is of interest?

2. Jan 12, 2006

### matt grime

You could at least put closing /tex's in. It is common to let quotients be q's and i notice that the subscript n's vanish in your (non-closed off) latex, should they?

3. Jan 12, 2006

### shmoe

I think you're saying something equivalent to: f(n)=n^2-3*n+1, and if f(n)=a*b for some n, then f(n+a)/a=f(n+b)/b. This is actually true for any monic quadradic polynomial with integer coefficients.

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