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

Direct product G=NxQ with N=C₂₁:D₄ and Q=C₂

		d	ρ	Label	ID
C₂xC₂₁:D₄		168		C2xC21:D4	336,157

Semidirect products G=N:Q with N=C₂₁:D₄ and Q=C₂

extension	φ:Q→Out N	d	ρ	Label	ID
C₂₁:D₄:₁C₂ = D₂₈:₅S₃	φ: C₂/C₁ → C₂ ⊆ Out C₂₁:D₄	168	4-	C21:D4:1C2	336,138
C₂₁:D₄:₂C₂ = D₁₂:₅D₇	φ: C₂/C₁ → C₂ ⊆ Out C₂₁:D₄	168	4-	C21:D4:2C2	336,145
C₂₁:D₄:₃C₂ = C₂₈:D₆	φ: C₂/C₁ → C₂ ⊆ Out C₂₁:D₄	84	4	C21:D4:3C2	336,150
C₂₁:D₄:₄C₂ = C₄₂.C₂³	φ: C₂/C₁ → C₂ ⊆ Out C₂₁:D₄	168	4-	C21:D4:4C2	336,153
C₂₁:D₄:₅C₂ = D₇xC₃:D₄	φ: C₂/C₁ → C₂ ⊆ Out C₂₁:D₄	84	4	C21:D4:5C2	336,161
C₂₁:D₄:₆C₂ = S₃xC₇:D₄	φ: C₂/C₁ → C₂ ⊆ Out C₂₁:D₄	84	4	C21:D4:6C2	336,162
C₂₁:D₄:₇C₂ = D₆.D₁₄	φ: trivial image	168	4	C21:D4:7C2	336,144

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