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| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 171 |
| 3 | 171 |
| 4 | 2532 |
| 5 | 9449 |
| 6 | 2532 |
| 7 | 38810 |
| 8 | 551631 |
| 9 | 551631 |
| 10 | 38810 |
| 11 | 597829 |
| 12 | 32258200 |
| 13 | 122794254 |
| 14 | 32258200 |
| 15 | 597829 |
| 16 | 9217211 |
| 17 | 1886206112 |
| 18 | 27327609576 |
| 19 | 27327609576 |
| 20 | 1886206112 |
| 21 | 9217211 |
| 22 | 142130380 |
| 23 | 110294918412 |
| 24 | 6080435385822 |
| 25 | 23138312968770 |
[15,171,171,2532,9449,2532,38810,551631,551631, 38810,597829,32258200,122794254,32258200,597829, 9217211,1886206112,27327609576,27327609576, 1886206112,9217211,142130380,110294918412, 6080435385822,23138312968770] |