I am trying to align some equations in the align ambient. Generally you can put the symbold &
before the character you want yo align and that is it. But in this case the characters i want to align (binoms) have different widths and they does not align in their center. I would like to have binoms and vertical dots all aligned over a vertical line passing through the center of the characters.
I post my code and the image of what i get and an image (made with an image editor) of what i would like to get.
\begin{align*}
&\binom{n}{n_1}&{} \text{sample text}\\
&\binom{n-n_1}{n_2}&{} \text{sample text}\\
&\vdots &{}\\
&\binom{n-n_1-\dots-n_{k-1}}{n_k} &{} \text{sample text}
\end{align*}