Extensions 1→N→G→Q→1 with N=C₂₁ and Q=Q₈

Direct product G=N×Q with N=C₂₁ and Q=Q₈

		d	ρ	Label	ID
Q₈×C₂₁		168	2	Q8xC21	168,41

Semidirect products G=N:Q with N=C₂₁ and Q=Q₈

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂₁⋊Q₈ = C₂₁⋊Q₈	φ: Q₈/C₂ → C₂² ⊆ Aut C₂₁	168	4-	C21:Q8	168,18
C₂₁⋊₂Q₈ = Dic₄₂	φ: Q₈/C₄ → C₂ ⊆ Aut C₂₁	168	2-	C21:2Q8	168,34
C₂₁⋊₃Q₈ = C₃×Dic₁₄	φ: Q₈/C₄ → C₂ ⊆ Aut C₂₁	168	2	C21:3Q8	168,24
C₂₁⋊₄Q₈ = C₇×Dic₆	φ: Q₈/C₄ → C₂ ⊆ Aut C₂₁	168	2	C21:4Q8	168,29

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