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| n | a(n) |
|---|---|
| 3 | 3 |
| 4 | 15 |
| 5 | 15 |
| 6 | 105 |
| 7 | 105 |
| 8 | 1155 |
| 9 | 1155 |
| 10 | 1365 |
| 11 | 15015 |
| 12 | 15015 |
| 13 | 15015 |
| 14 | 255255 |
| 15 | 255255 |
| 16 | 596505 |
| 17 | 4849845 |
| 18 | 4849845 |
| 19 | 4849845 |
| 20 | 10140585 |
| 21 | 10140585 |
| 22 | 179444265 |
| 23 | 229474245 |
| 24 | 229474245 |
| 25 | 242777535 |
| 26 | 640049865 |
| 27 | 5898837945 |
| 28 | 7357214865 |
| 29 | 7357214865 |
| 30 | 7357214865 |
| 31 | 13350001665 |
| 32 | 196656364905 |
[3,15,15,105,105,1155,1155,1365,15015,15015,15015, 255255,255255,596505,4849845,4849845,4849845, 10140585,10140585,179444265,229474245,229474245, 242777535,640049865,5898837945,7357214865, 7357214865,7357214865,13350001665,196656364905] |