M_{23}

A_{8} 506 1a + 22a + 230a + 253a 4

Character Numbers: [ 1, 2, 5, 9 ]

S_{1} S_{2} S_{3} S_{4}
χ_{1} 1 15 210 280
χ_{2} 1 −8 49 −42
χ_{3} 1 4 1 −6
χ_{4} 1 −3 −6  8

Ramanujan Graphs: [ 2, 3, 4 ], [ 3, 4 ]