\begin{definition}[Definition:Liouville's Constant]
'''Liouville's constant''' is the real number defined as:
{{begin-eqn}}
{{eqn | l = \sum_{n \mathop \ge 1} \dfrac 1 {10^{n!} }
      | r = \frac 1 {10^1} + \frac 1 {10^2} + \frac 1 {10^6} +  \frac 1 {10^{24} } + \cdots
      | c = 
}}
{{eqn | r = 0 \cdotp 11000 \, 10000 \, 00000 \, 00000 \, 00010 \, 00 \ldots
      | c = 
}}
{{end-eqn}}
{{OEIS|A012245}}
\end{definition}