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A068507 as a simple table
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 12 |
| 4 | 60 |
| 5 | 180 |
| 6 | 240 |
| 7 | 7560 |
| 8 | 55440 |
| 9 | 110880 |
| 10 | 73329656400 |
| 11 | 18632716502400 |
| 12 | 130429015516800 |
| 13 | 48519593772249600 |
| 14 | 149602080797769600 |
| 15 | 74377068101903920953600 |
| 16 | 927967188666725711881005276648000 |
| 17 | 241271469053348685089061371928480000 |
[4,6,12,60,180,240,7560,55440,110880,73329656400, 18632716502400,130429015516800,48519593772249600, 149602080797769600,74377068101903920953600, 927967188666725711881005276648000, 241271469053348685089061371928480000] |