Extensions 1→N→G→Q→1 with N=D₂₁ and Q=D₄

Direct product G=N×Q with N=D₂₁ and Q=D₄

		d	ρ	Label	ID
D₄×D₂₁		84	4+	D4xD21	336,198

Semidirect products G=N:Q with N=D₂₁ and Q=D₄

extension	φ:Q→Out N	d	ρ	Label	ID
D₂₁⋊₁D₄ = C₂₈⋊D₆	φ: D₄/C₄ → C₂ ⊆ Out D₂₁	84	4	D21:1D4	336,150
D₂₁⋊₂D₄ = D₆⋊D₁₄	φ: D₄/C₂² → C₂ ⊆ Out D₂₁	84	4+	D21:2D4	336,163

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