\begin{definition}[Definition:Hexamorphic Number/Sequence]
The sequence of hexamorphic numbers, for $n \in \Z_{\ge 0}$, begins:
{{begin-eqn}}
{{eqn | l = H_1
      | r = 1
}}
{{eqn | l = H_5
      | r = 45
}}
{{eqn | l = H_6
      | r = 66
}}
{{eqn | l = H_{25}
      | r = 1225
}}
{{eqn | l = H_{26}
      | r = 1326
}}
{{eqn | l = H_{50}
      | r = 4950
}}
{{end-eqn}}
{{OEIS|A038494}}
\end{definition}