Extensions 1→N→G→Q→1 with N=C₁₅ and Q=C₁₈

Direct product G=N×Q with N=C₁₅ and Q=C₁₈

		d	ρ	Label	ID
C₃×C₉₀		270		C3xC90	270,20

Semidirect products G=N:Q with N=C₁₅ and Q=C₁₈

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₅⋊₁C₁₈ = C₉×D₁₅	φ: C₁₈/C₉ → C₂ ⊆ Aut C₁₅	90	2	C15:1C18	270,13
C₁₅⋊₂C₁₈ = D₅×C₃×C₉	φ: C₁₈/C₉ → C₂ ⊆ Aut C₁₅	135		C15:2C18	270,5
C₁₅⋊₃C₁₈ = S₃×C₄₅	φ: C₁₈/C₉ → C₂ ⊆ Aut C₁₅	90	2	C15:3C18	270,9

Non-split extensions G=N.Q with N=C₁₅ and Q=C₁₈

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₅.C₁₈ = D₅×C₂₇	φ: C₁₈/C₉ → C₂ ⊆ Aut C₁₅	135	2	C15.C18	270,2

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Extensions 1→N→G→Q→1 with N=C15 and Q=C18