Extensions 1→N→G→Q→1 with N=C₇ and Q=C₃

Direct product G=N×Q with N=C₇ and Q=C₃

		d	ρ	Label	ID
C₂₁		21	1	C21	21,2

Semidirect products G=N:Q with N=C₇ and Q=C₃

extension	φ:Q→Aut N	d	ρ	Label	ID
C₇⋊C₃ = C₇⋊C₃	φ: C₃/C₁ → C₃ ⊆ Aut C₇	7	3	C7:C3	21,1

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