Extensions 1→N→G→Q→1 with N=C₂ and Q=C₄×D₂₁

Direct product G=N×Q with N=C₂ and Q=C₄×D₂₁

		d	ρ	Label	ID
C₂×C₄×D₂₁		168		C2xC4xD21	336,195

Non-split extensions G=N.Q with N=C₂ and Q=C₄×D₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₄×D₂₁) = C₈×D₂₁	central extension (φ=1)	168	2	C2.1(C4xD21)	336,90
C₂.₂(C₄×D₂₁) = C₄×Dic₂₁	central extension (φ=1)	336		C2.2(C4xD21)	336,97
C₂.₃(C₄×D₂₁) = C₅₆⋊S₃	central stem extension (φ=1)	168	2	C2.3(C4xD21)	336,91
C₂.₄(C₄×D₂₁) = C₄₂.₄Q₈	central stem extension (φ=1)	336		C2.4(C4xD21)	336,98
C₂.₅(C₄×D₂₁) = C₂.D₈₄	central stem extension (φ=1)	168		C2.5(C4xD21)	336,100

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