Linear representation theory of general affine group:GA(2,3)

GAP implementation
The degrees of irreducible representations can be calculated using GAP's CharacterDegrees and GA functions (the GA function is not in-built):

gap> CharacterDegrees(GA(2,3)); [ [ 1, 2 ], [ 2, 3 ], [ 3, 2 ], [ 4, 1 ], [ 8, 2 ], [ 16, 1 ] ]