Extensions 1→N→G→Q→1 with N=D4 and Q=D18

Direct product G=N×Q with N=D4 and Q=D18
dρLabelID
C2×D4×D972C2xD4xD9288,356

Semidirect products G=N:Q with N=D4 and Q=D18
extensionφ:Q→Out NdρLabelID
D41D18 = D8×D9φ: D18/D9C2 ⊆ Out D4724+D4:1D18288,120
D42D18 = D8⋊D9φ: D18/D9C2 ⊆ Out D4724D4:2D18288,121
D43D18 = C2×D4⋊D9φ: D18/C18C2 ⊆ Out D4144D4:3D18288,142
D44D18 = D4⋊D18φ: D18/C18C2 ⊆ Out D4724+D4:4D18288,160
D45D18 = C2×D42D9φ: trivial image144D4:5D18288,357
D46D18 = D46D18φ: trivial image724D4:6D18288,358
D47D18 = C4○D4×D9φ: trivial image724D4:7D18288,362
D48D18 = D48D18φ: trivial image724+D4:8D18288,363

Non-split extensions G=N.Q with N=D4 and Q=D18
extensionφ:Q→Out NdρLabelID
D4.1D18 = D83D9φ: D18/D9C2 ⊆ Out D41444-D4.1D18288,122
D4.2D18 = SD16×D9φ: D18/D9C2 ⊆ Out D4724D4.2D18288,123
D4.3D18 = D72⋊C2φ: D18/D9C2 ⊆ Out D4724+D4.3D18288,124
D4.4D18 = SD16⋊D9φ: D18/D9C2 ⊆ Out D41444-D4.4D18288,125
D4.5D18 = SD163D9φ: D18/D9C2 ⊆ Out D41444D4.5D18288,126
D4.6D18 = C2×D4.D9φ: D18/C18C2 ⊆ Out D4144D4.6D18288,141
D4.7D18 = D366C22φ: D18/C18C2 ⊆ Out D4724D4.7D18288,143
D4.8D18 = D4.D18φ: D18/C18C2 ⊆ Out D41444-D4.8D18288,159
D4.9D18 = D4.9D18φ: D18/C18C2 ⊆ Out D41444D4.9D18288,161
D4.10D18 = D4.10D18φ: trivial image1444-D4.10D18288,364

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