TikZJax
TikZ is running entirely in the browser!
\def \n {5} \def \radius {3cm} \def \margin {8} % margin in angles, depends on the radius \foreach \s in {1,...,\n} { \node[draw, circle] at ({360/\n * (\s - 1)}:\radius) {$\s$}; \draw[->, >=latex] ({360/\n * (\s - 1)+\margin}:\radius) arc ({360/\n * (\s - 1)+\margin}:{360/\n * (\s)-\margin}:\radius); }