\begin{definition}[Definition:Pascal's Triangle/Lesser Diagonal]
Consider Pascal's Triangle:
{{:Definition:Pascal's Triangle}}
The $n$th '''lesser diagonal''' of Pascal's triangle consists of the entries $\dbinom {n - m} m$ for $m \ge 0$, leading up and to the right from the entry in row $n$ and column $0$:
:$\dbinom n 0, \dbinom {n - 1} 1, \dbinom {n - 2} 2, \dbinom {n - 3} 3, \ldots$
\end{definition}