18 groups of order 342.
| SmallGroups | group |
|---|---|
| (342, 1) | #4294⋊C2 #66783 |
| (342, 2) | C2×#4294 #66784 |
| (342, 3) | D9×C19 #66785 |
| (342, 4) | C9×D19 #66786 |
| (342, 5) | D171 #66787 |
| (342, 6) | C2×C9×C19 #66788 |
| (342, 7) | AGL(1,𝔽19) #66789 |
| (342, 8) | C2×#4296 #66790 |
| (342, 9) | C3×D19⋊C3 #66791 |
| (342, 10) | D3×C19⋊C3 #66792 |
| (342, 11) | C3⋊(D19⋊C3) #66793 |
| (342, 12) | C2×C3×C19⋊C3 #66794 |
| (342, 13) | C32×D19 #66795 |
| (342, 14) | C3×D3×C19 #66796 |
| (342, 15) | C3×D57 #66797 |
| (342, 16) | C3⋊D3×C19 #66798 |
| (342, 17) | C3⋊D57 #66799 |
| (342, 18) | C2×C32×C19 #66800 |