F i_{22}

O_{8}^{+}(2).3.2  61776 1a + 3080a + 13650a + 45045a  4

Character Numbers: [ 1, 7, 9, 13 ]

S_{1} S_{2}  S_{3}  S_{4}
χ_{1} 1 1575 22400 37800
χ_{2} 1 171 −64 −108
χ_{3} 1 −9 224 −216
χ_{4} 1 −9 −64  72

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