Extensions 1→N→G→Q→1 with N=C₁₈ and Q=C₄²

Direct product G=N×Q with N=C₁₈ and Q=C₄²

		d	ρ	Label	ID
C₂×C₄×C₃₆		288		C2xC4xC36	288,164

Semidirect products G=N:Q with N=C₁₈ and Q=C₄²

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈⋊C₄² = C₂×C₄×Dic₉	φ: C₄²/C₂×C₄ → C₂ ⊆ Aut C₁₈	288		C18:C4^2	288,132

Non-split extensions G=N.Q with N=C₁₈ and Q=C₄²

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈.₁C₄² = C₄×C₉⋊C₈	φ: C₄²/C₂×C₄ → C₂ ⊆ Aut C₁₈	288		C18.1C4^2	288,9
C₁₈.₂C₄² = C₄².D₉	φ: C₄²/C₂×C₄ → C₂ ⊆ Aut C₁₈	288		C18.2C4^2	288,10
C₁₈.₃C₄² = C₈×Dic₉	φ: C₄²/C₂×C₄ → C₂ ⊆ Aut C₁₈	288		C18.3C4^2	288,21
C₁₈.₄C₄² = C₇₂⋊C₄	φ: C₄²/C₂×C₄ → C₂ ⊆ Aut C₁₈	288		C18.4C4^2	288,23
C₁₈.₅C₄² = C₁₈.C₄²	φ: C₄²/C₂×C₄ → C₂ ⊆ Aut C₁₈	288		C18.5C4^2	288,38
C₁₈.₆C₄² = C₉×C₂.C₄²	central extension (φ=1)	288		C18.6C4^2	288,45
C₁₈.₇C₄² = C₉×C₈⋊C₄	central extension (φ=1)	288		C18.7C4^2	288,47

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