HS

M_{22} 100 1a + 22a + 77a 3

Character Numbers: [ 1, 2, 3 ]

S_{1} S_{2} S_{3}
χ_{1} 1 22 77
χ_{2} 1 −8 7
χ_{3} 1 2 −3

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