Co_{2}

{2^{10} : M_{22} : 2 ≤ \atop 2^{10} : M_{22} : 2} 93150 1a + 23a + 275a + 2024a + 2277a +

12650a + 31625b + 44275a

8

Character Numbers: [ 1, 2, 4, 6, 7, 14, 17, 20 ]

S_{1} S_{2} S_{3} S_{4}  S_{5}  S_{6}  S_{7}  S_{8}
χ_{1} 1 1 924 2464 2464 22528 22528 42240
χ_{2} 1 −1  0 1232 −1232 −5632 5632  0
χ_{3} 1 1 −42 532  532  448 448 −1920
χ_{4} 1 1 174 64  64 −272 −272  240
χ_{5} 1 −1  0 182 −182  368 −368  0
χ_{6} 1 1 −42 28  28 −128 −128  240
χ_{7} 1 1  6 −20 −20  64  64 −96
χ_{8} 1 −1  0 −10  10 −16  16  0

Ramanujan Graphs: [ 2, 3, 4, 5, 6, 7, 8 ], [ 2, 4, 5, 6, 7, 8 ], [ 3, 4, 5, 6, 7, 8 ], [ 4, 5, 6, 7, 8 ]