M_{11}

A_{6}.2_{3}  11  1a + 10a  2

Character Numbers: [ 1, 2 ]

\begin{aligned}& S_{1} & S_{2} \\ χ_{1} & 1 & 10 \\ χ_{2} & 1 & −1 \end{aligned}

Ramanujan Graphen: [ 2 ]