Extensions 1→N→G→Q→1 with N=C₁₈ and Q=C₂₁

Direct product G=N×Q with N=C₁₈ and Q=C₂₁

		d	ρ	Label	ID
C₃×C₁₂₆		378		C3xC126	378,44

Semidirect products G=N:Q with N=C₁₈ and Q=C₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈⋊C₂₁ = C₁₄×3_-¹⁺²	φ: C₂₁/C₇ → C₃ ⊆ Aut C₁₈	126	3	C18:C21	378,46

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