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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 3 |
| 7 | 3 |
| 8 | 45 |
| 9 | 45 |
| 10 | 45 |
| 11 | 945 |
| 12 | 945 |
| 13 | 4725 |
| 14 | 42525 |
| 15 | 42525 |
| 16 | 42525 |
| 17 | 1403325 |
| 18 | 49116375 |
| 19 | 49116375 |
| 20 | 1915538625 |
| 21 | 1915538625 |
| 22 | 1915538625 |
| 23 | 86199238125 |
| 24 | 86199238125 |
| 25 | 603394666875 |
| 26 | 30773128010625 |
| 27 | 30773128010625 |
| 28 | 1692522040584375 |
| 29 | 96473756313309375 |
| 30 | 96473756313309375 |
[1,1,1,1,3,3,3,45,45,45,945,945,4725,42525,42525, 42525,1403325,49116375,49116375,1915538625, 1915538625,1915538625,86199238125,86199238125, 603394666875,30773128010625,30773128010625, 1692522040584375,96473756313309375, 96473756313309375] |