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

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

		d	ρ	Label	ID
D₄₂		42	2+	D42	84,14

Semidirect products G=N:Q with N=D₂₁ and Q=C₂

extension	φ:Q→Out N	d	ρ	Label	ID
D₂₁⋊C₂ = S₃×D₇	φ: C₂/C₁ → C₂ ⊆ Out D₂₁	21	4+	D21:C2	84,8

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