J_{2}

3.A_{6}.2_{2} 280 1a + 63a + 90a + 126a 4

Character Numbers: [ 1, 7, 10, 11 ]

S_{1} S_{2} S_{3} S_{4}
χ_{1} 1 36 108 135
χ_{2} 1 −4 −12 15
χ_{3} 1 8 −4 −5
χ_{4} 1 −4  8 −5

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