Extensions 1→N→G→Q→1 with N=C₁₈ and Q=3_-¹⁺²

Direct product G=N×Q with N=C₁₈ and Q=3_-¹⁺²

		d	ρ	Label	ID
C₁₈×3_-¹⁺²		162		C18xES-(3,1)	486,195

Semidirect products G=N:Q with N=C₁₈ and Q=3_-¹⁺²

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈⋊₁3_-¹⁺² = C₂×C₉²⋊₇C₃	φ: 3_-¹⁺²/C₉ → C₃ ⊆ Aut C₁₈	162		C18:1ES-(3,1)	486,202
C₁₈⋊₂3_-¹⁺² = C₂×C₉²⋊₉C₃	φ: 3_-¹⁺²/C₉ → C₃ ⊆ Aut C₁₈	162		C18:2ES-(3,1)	486,206
C₁₈⋊₃3_-¹⁺² = C₂×C₉⋊3_-¹⁺²	φ: 3_-¹⁺²/C₃² → C₃ ⊆ Aut C₁₈	162		C18:3ES-(3,1)	486,200

Non-split extensions G=N.Q with N=C₁₈ and Q=3_-¹⁺²

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈.₁3_-¹⁺² = C₂×C₉.₅He₃	φ: 3_-¹⁺²/C₉ → C₃ ⊆ Aut C₁₈	162	3	C18.1ES-(3,1)	486,79
C₁₈.₂3_-¹⁺² = C₂×C₉.₆He₃	φ: 3_-¹⁺²/C₉ → C₃ ⊆ Aut C₁₈	162	3	C18.2ES-(3,1)	486,80
C₁₈.₃3_-¹⁺² = C₂×C₉²⋊₈C₃	φ: 3_-¹⁺²/C₉ → C₃ ⊆ Aut C₁₈	162		C18.3ES-(3,1)	486,205
C₁₈.₄3_-¹⁺² = C₂×C₉.₄He₃	φ: 3_-¹⁺²/C₃² → C₃ ⊆ Aut C₁₈	54	3	C18.4ES-(3,1)	486,76
C₁₈.₅3_-¹⁺² = C₂×C₂₇⋊C₉	φ: 3_-¹⁺²/C₃² → C₃ ⊆ Aut C₁₈	54	9	C18.5ES-(3,1)	486,82
C₁₈.₆3_-¹⁺² = C₂×C₃²⋊C₂₇	central extension (φ=1)	162		C18.6ES-(3,1)	486,72
C₁₈.₇3_-¹⁺² = C₂×C₉⋊C₂₇	central extension (φ=1)	486		C18.7ES-(3,1)	486,81

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