Extensions 1→N→G→Q→1 with N=C₂ and Q=C₅×D₂₁

Direct product G=N×Q with N=C₂ and Q=C₅×D₂₁

		d	ρ	Label	ID
C₁₀×D₂₁		210	2	C10xD21	420,38

Non-split extensions G=N.Q with N=C₂ and Q=C₅×D₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.(C₅×D₂₁) = C₅×Dic₂₁	central extension (φ=1)	420	2	C2.(C5xD21)	420,9

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Extensions 1→N→G→Q→1 with N=C2 and Q=C5×D21