Extensions 1→N→G→Q→1 with N=C₂₂₁ and Q=C₂

Direct product G=N×Q with N=C₂₂₁ and Q=C₂

		d	ρ	Label	ID
C₄₄₂		442	1	C442	442,4

Semidirect products G=N:Q with N=C₂₂₁ and Q=C₂

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂₂₁⋊₁C₂ = D₂₂₁	φ: C₂/C₁ → C₂ ⊆ Aut C₂₂₁	221	2+	C221:1C2	442,3
C₂₂₁⋊₂C₂ = C₁₃×D₁₇	φ: C₂/C₁ → C₂ ⊆ Aut C₂₂₁	221	2	C221:2C2	442,2
C₂₂₁⋊₃C₂ = C₁₇×D₁₃	φ: C₂/C₁ → C₂ ⊆ Aut C₂₂₁	221	2	C221:3C2	442,1

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