Extensions 1→N→G→Q→1 with N=C₂ and Q=C₉×C₂²⋊C₄

Direct product G=N×Q with N=C₂ and Q=C₉×C₂²⋊C₄

		d	ρ	Label	ID
C₂²⋊C₄×C₁₈		144		C2^2:C4xC18	288,165

Non-split extensions G=N.Q with N=C₂ and Q=C₉×C₂²⋊C₄

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₉×C₂²⋊C₄) = C₉×C₂.C₄²	central extension (φ=1)	288		C2.1(C9xC2^2:C4)	288,45
C₂.₂(C₉×C₂²⋊C₄) = C₉×C₂²⋊C₈	central extension (φ=1)	144		C2.2(C9xC2^2:C4)	288,48
C₂.₃(C₉×C₂²⋊C₄) = C₉×C₂³⋊C₄	central stem extension (φ=1)	72	4	C2.3(C9xC2^2:C4)	288,49
C₂.₄(C₉×C₂²⋊C₄) = C₉×C₄.D₄	central stem extension (φ=1)	72	4	C2.4(C9xC2^2:C4)	288,50
C₂.₅(C₉×C₂²⋊C₄) = C₉×C₄.₁₀D₄	central stem extension (φ=1)	144	4	C2.5(C9xC2^2:C4)	288,51
C₂.₆(C₉×C₂²⋊C₄) = C₉×D₄⋊C₄	central stem extension (φ=1)	144		C2.6(C9xC2^2:C4)	288,52
C₂.₇(C₉×C₂²⋊C₄) = C₉×Q₈⋊C₄	central stem extension (φ=1)	288		C2.7(C9xC2^2:C4)	288,53
C₂.₈(C₉×C₂²⋊C₄) = C₉×C₄≀C₂	central stem extension (φ=1)	72	2	C2.8(C9xC2^2:C4)	288,54

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