Extensions 1→N→G→Q→1 with N=C₂×C₄ and Q=C₁₈

Direct product G=N×Q with N=C₂×C₄ and Q=C₁₈

		d	ρ	Label	ID
C₂²×C₃₆		144		C2^2xC36	144,47

Semidirect products G=N:Q with N=C₂×C₄ and Q=C₁₈

extension	φ:Q→Aut N	d	ρ	Label	ID
(C₂×C₄)⋊₁C₁₈ = C₉×C₂²⋊C₄	φ: C₁₈/C₉ → C₂ ⊆ Aut C₂×C₄	72		(C2xC4):1C18	144,21
(C₂×C₄)⋊₂C₁₈ = D₄×C₁₈	φ: C₁₈/C₉ → C₂ ⊆ Aut C₂×C₄	72		(C2xC4):2C18	144,48
(C₂×C₄)⋊₃C₁₈ = C₉×C₄○D₄	φ: C₁₈/C₉ → C₂ ⊆ Aut C₂×C₄	72	2	(C2xC4):3C18	144,50

Non-split extensions G=N.Q with N=C₂×C₄ and Q=C₁₈

extension	φ:Q→Aut N	d	ρ	Label	ID
(C₂×C₄).₁C₁₈ = C₉×C₄⋊C₄	φ: C₁₈/C₉ → C₂ ⊆ Aut C₂×C₄	144		(C2xC4).1C18	144,22
(C₂×C₄).₂C₁₈ = C₉×M₄(2)	φ: C₁₈/C₉ → C₂ ⊆ Aut C₂×C₄	72	2	(C2xC4).2C18	144,24
(C₂×C₄).₃C₁₈ = Q₈×C₁₈	φ: C₁₈/C₉ → C₂ ⊆ Aut C₂×C₄	144		(C2xC4).3C18	144,49

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Extensions 1→N→G→Q→1 with N=C2×C4 and Q=C18