Question on the final step of Hanson's proof that $\prod\limits_{p^a \le n}p^a < 3^n$

45 Views Asked by At

In Denis Hanson's proof that $\prod\limits_{p^a \le n} < 3^n$, I am confused by the final step.

He proceeds to show that:

$$C(n) = \frac{n!}{\lfloor n/a_1\rfloor!\lfloor n/a_2\rfloor!\lfloor n/a_3\rfloor!\dots} < e^{k-3/2}n^{k-3/2}w^n$$

for $k > 2$ and $w < 2.952$

Then, he mentions that:

A check of tables reveals that $C(n) < 3^n$ for $n > 1300$

What table is he referring to? And how is this possible given the value of $w$. How can $(en)^{k-3/2}$ possibly be less than $3^{n - 2.952}$?

Am I misunderstanding the last step? Did I mistake a mistake in any of my statement above? If not, could someone send me a reference to the tables and explain how the tables establish the conclusion.