\documentclass{article}
\renewcommand\thepage{\arabic{page}\addtocounter{page}{2}}
\begin{document}
\section{A}\label{sec:A}\pageref{sec:A}\newpage
\section{B}\label{sec:B}\pageref{sec:B}\newpage
\section{C}\label{sec:C}\pageref{sec:C}\newpage
\section{D}\label{sec:D}\pageref{sec:D}
\end{document}