M_{11}

A_{5}.2 66 1a + 10a + 11a + 44a 4

Character Numbers: [ 1, 2, 5, 8 ]

S_{1} S_{2} S_{3} S_{4}
χ_{1} 1 15 20 30
χ_{2} 1 −7 −2 8
χ_{3} 1 −3 8 −6
χ_{4} 1 2 −2 −1

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