Extensions 1→N→G→Q→1 with N=C₂ and Q=Dic₂₁

Direct product G=N×Q with N=C₂ and Q=Dic₂₁

		d	ρ	Label	ID
C₂×Dic₂₁		168		C2xDic21	168,37

Non-split extensions G=N.Q with N=C₂ and Q=Dic₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.Dic₂₁ = C₂₁⋊C₈	central extension (φ=1)	168	2	C2.Dic21	168,5

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Extensions 1→N→G→Q→1 with N=C2 and Q=Dic21