Count of All Permutations on n Objects/Examples

Examples of Count of All Permutations on $n$ Objects

Even Integers from $\set {1, 2, 3, 4}$

Let $N$ be the number of even integers which can be made using one or more of the digits $1$, $2$, $3$ and $4$ no more than once each.

Then:

$N = 32$