Extensions 1→N→G→Q→1 with N=C₂ and Q=D₄×C₂₁

Direct product G=N×Q with N=C₂ and Q=D₄×C₂₁

		d	ρ	Label	ID
D₄×C₄₂		168		D4xC42	336,205

Non-split extensions G=N.Q with N=C₂ and Q=D₄×C₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(D₄×C₂₁) = C₂²⋊C₄×C₂₁	central extension (φ=1)	168		C2.1(D4xC21)	336,107
C₂.₂(D₄×C₂₁) = C₄⋊C₄×C₂₁	central extension (φ=1)	336		C2.2(D4xC21)	336,108
C₂.₃(D₄×C₂₁) = D₈×C₂₁	central stem extension (φ=1)	168	2	C2.3(D4xC21)	336,111
C₂.₄(D₄×C₂₁) = SD₁₆×C₂₁	central stem extension (φ=1)	168	2	C2.4(D4xC21)	336,112
C₂.₅(D₄×C₂₁) = Q₁₆×C₂₁	central stem extension (φ=1)	336	2	C2.5(D4xC21)	336,113

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