extension | φ:Q→Aut N | d | ρ | Label | ID |
C2.1(C17:D4) = C34.D4 | central extension (φ=1) | 272 | | C2.1(C17:D4) | 272,12 |
C2.2(C17:D4) = D34:C4 | central extension (φ=1) | 136 | | C2.2(C17:D4) | 272,14 |
C2.3(C17:D4) = C23.D17 | central extension (φ=1) | 136 | | C2.3(C17:D4) | 272,19 |
C2.4(C17:D4) = D4:D17 | central stem extension (φ=1) | 136 | 4+ | C2.4(C17:D4) | 272,15 |
C2.5(C17:D4) = D4.D17 | central stem extension (φ=1) | 136 | 4- | C2.5(C17:D4) | 272,16 |
C2.6(C17:D4) = Q8:D17 | central stem extension (φ=1) | 136 | 4+ | C2.6(C17:D4) | 272,17 |
C2.7(C17:D4) = C17:Q16 | central stem extension (φ=1) | 272 | 4- | C2.7(C17:D4) | 272,18 |