Extensions 1→N→G→Q→1 with N=C₂₁ and Q=C₂xC₈

Direct product G=NxQ with N=C₂₁ and Q=C₂xC₈

		d	ρ	Label	ID
C₂xC₁₆₈		336		C2xC168	336,109

Semidirect products G=N:Q with N=C₂₁ and Q=C₂xC₈

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂₁:₁(C₂xC₈) = D₇xC₃:C₈	φ: C₂xC₈/C₄ → C₂² ⊆ Aut C₂₁	168	4	C21:1(C2xC8)	336,23
C₂₁:₂(C₂xC₈) = S₃xC₇:C₈	φ: C₂xC₈/C₄ → C₂² ⊆ Aut C₂₁	168	4	C21:2(C2xC8)	336,24
C₂₁:₃(C₂xC₈) = D₂₁:C₈	φ: C₂xC₈/C₄ → C₂² ⊆ Aut C₂₁	168	4	C21:3(C2xC8)	336,25
C₂₁:₄(C₂xC₈) = C₈xD₂₁	φ: C₂xC₈/C₈ → C₂ ⊆ Aut C₂₁	168	2	C21:4(C2xC8)	336,90
C₂₁:₅(C₂xC₈) = D₇xC₂₄	φ: C₂xC₈/C₈ → C₂ ⊆ Aut C₂₁	168	2	C21:5(C2xC8)	336,58
C₂₁:₆(C₂xC₈) = S₃xC₅₆	φ: C₂xC₈/C₈ → C₂ ⊆ Aut C₂₁	168	2	C21:6(C2xC8)	336,74
C₂₁:₇(C₂xC₈) = C₂xC₂₁:C₈	φ: C₂xC₈/C₂xC₄ → C₂ ⊆ Aut C₂₁	336		C21:7(C2xC8)	336,95
C₂₁:₈(C₂xC₈) = C₆xC₇:C₈	φ: C₂xC₈/C₂xC₄ → C₂ ⊆ Aut C₂₁	336		C21:8(C2xC8)	336,63
C₂₁:₉(C₂xC₈) = C₁₄xC₃:C₈	φ: C₂xC₈/C₂xC₄ → C₂ ⊆ Aut C₂₁	336		C21:9(C2xC8)	336,79

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