Extensions 1→N→G→Q→1 with N=C₂ and Q=D₄.D₉

Direct product G=N×Q with N=C₂ and Q=D₄.D₉

		d	ρ	Label	ID
C₂×D₄.D₉		144		C2xD4.D9	288,141

Non-split extensions G=N.Q with N=C₂ and Q=D₄.D₉

extension	φ:Q→Aut N	d	Label	ID
C₂.₁(D₄.D₉) = C₄.Dic₁₈	central extension (φ=1)	288	C2.1(D4.D9)	288,15
C₂.₂(D₄.D₉) = C₁₈.Q₁₆	central extension (φ=1)	288	C2.2(D4.D9)	288,16
C₂.₃(D₄.D₉) = D₄⋊Dic₉	central extension (φ=1)	144	C2.3(D4.D9)	288,40

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Extensions 1→N→G→Q→1 with N=C2 and Q=D4.D9