\documentclass{minimal}
\usepackage{ifthen}
\usepackage{intcalc}
\newcounter{mycount}
\newboolean{fizzOrBuzz}
\newcommand\fizzBuzz[1]{%
\setcounter{mycount}{1}\whiledo{\value{mycount}<#1}
    {
    \setboolean{fizzOrBuzz}{false}
    \ifthenelse{\equal{\intcalcMod{\themycount}{3}}{0}}{\setboolean{fizzOrBuzz}{true}Fizz}{}
    \ifthenelse{\equal{\intcalcMod{\themycount}{5}}{0}}{\setboolean{fizzOrBuzz}{true}Buzz}{}
    \ifthenelse{\boolean{fizzOrBuzz}}{}{\themycount}
    \stepcounter{mycount}
    \\
    }
}
\begin{document}
\fizzBuzz{101}
\end{document}
