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

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

Semidirect products G=N:Q with N=C18 and Q=C18
extensionφ:Q→Aut NdρLabelID
C18⋊C18 = C2×C9⋊C18φ: C18/C3C6 ⊆ Aut C18366C18:C18324,64
C182C18 = C22×C9⋊C9φ: C18/C6C3 ⊆ Aut C18324C18:2C18324,83
C183C18 = D9×C18φ: C18/C9C2 ⊆ Aut C18362C18:3C18324,61

Non-split extensions G=N.Q with N=C18 and Q=C18
extensionφ:Q→Aut NdρLabelID
C18.C18 = C9⋊C36φ: C18/C3C6 ⊆ Aut C18366C18.C18324,9
C18.2C18 = C4×C9⋊C9φ: C18/C6C3 ⊆ Aut C18324C18.2C18324,28
C18.3C18 = C4×C27⋊C3φ: C18/C6C3 ⊆ Aut C181083C18.3C18324,30
C18.4C18 = C22×C27⋊C3φ: C18/C6C3 ⊆ Aut C18108C18.4C18324,85
C18.5C18 = C9×Dic9φ: C18/C9C2 ⊆ Aut C18362C18.5C18324,6