There exists a polynomial $f(x)$ with integer coefficients, with $f(x)>x$ for all non negative integers $x$, such that all iterations of $f$ starting at zero are prime numbers. Certainly published before 2006 and also outrageous.

There exists a polynomial $f(x)$ with integer coefficients, with $f(x)>x$ for all non negative integers $x$, such that all iterations of $f$ starting at some non negative integer are prime numbers. Certainly published before 2006 and also outrageous.

There exist a polynomial $f(x)$ with integer coefficient, with $f(x)>x$ for all non negative integers $x$, such that all iterations of $f$ starting at zero are prime numbers. Certainly published before 2006.

There exists a polynomial $f(x)$ with integer coefficients, with $f(x)>x$ for all non negative integers $x$, such that all iterations of $f$ starting at zero are prime numbers. Certainly published before 2006 and also outrageous.