Extensions 1→N→G→Q→1 with N=C4 and Q=C7×D7

Direct product G=N×Q with N=C4 and Q=C7×D7
dρLabelID
D7×C28562D7xC28392,24

Semidirect products G=N:Q with N=C4 and Q=C7×D7
extensionφ:Q→Aut NdρLabelID
C4⋊(C7×D7) = C7×D28φ: C7×D7/C72C2 ⊆ Aut C4562C4:(C7xD7)392,25

Non-split extensions G=N.Q with N=C4 and Q=C7×D7
extensionφ:Q→Aut NdρLabelID
C4.(C7×D7) = C7×Dic14φ: C7×D7/C72C2 ⊆ Aut C4562C4.(C7xD7)392,23
C4.2(C7×D7) = C7×C7⋊C8central extension (φ=1)562C4.2(C7xD7)392,14

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