Extensions 1→N→G→Q→1 with N=C₂ and Q=C₂²xD₂₁

Direct product G=NxQ with N=C₂ and Q=C₂²xD₂₁

		d	ρ	Label	ID
C₂³xD₂₁		168		C2^3xD21	336,227

Non-split extensions G=N.Q with N=C₂ and Q=C₂²xD₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁(C₂²xD₂₁) = C₂xC₄xD₂₁	central extension (φ=1)	168		C2.1(C2^2xD21)	336,195
C₂.₂(C₂²xD₂₁) = C₂²xDic₂₁	central extension (φ=1)	336		C2.2(C2^2xD21)	336,202
C₂.₃(C₂²xD₂₁) = C₂xDic₄₂	central stem extension (φ=1)	336		C2.3(C2^2xD21)	336,194
C₂.₄(C₂²xD₂₁) = C₂xD₈₄	central stem extension (φ=1)	168		C2.4(C2^2xD21)	336,196
C₂.₅(C₂²xD₂₁) = D₈₄:₁₁C₂	central stem extension (φ=1)	168	2	C2.5(C2^2xD21)	336,197
C₂.₆(C₂²xD₂₁) = D₄xD₂₁	central stem extension (φ=1)	84	4+	C2.6(C2^2xD21)	336,198
C₂.₇(C₂²xD₂₁) = D₄:₂D₂₁	central stem extension (φ=1)	168	4-	C2.7(C2^2xD21)	336,199
C₂.₈(C₂²xD₂₁) = Q₈xD₂₁	central stem extension (φ=1)	168	4-	C2.8(C2^2xD21)	336,200
C₂.₉(C₂²xD₂₁) = Q₈:₃D₂₁	central stem extension (φ=1)	168	4+	C2.9(C2^2xD21)	336,201
C₂.₁₀(C₂²xD₂₁) = C₂xC₂₁:₇D₄	central stem extension (φ=1)	168		C2.10(C2^2xD21)	336,203

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