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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 4 |
| 4 | 14 |
| 5 | 98 |
| 6 | 2 |
| 7 | 4386 |
| 8 | 18 |
| 9 | 324 |
| 10 | 60 |
| 11 | 36457092 |
| 12 | 12 |
| 13 | 5769254382 |
| 14 | 2598 |
| 15 | 78 |
| 16 | 414 |
| 17 | 335391687123174 |
| 18 | 510 |
| 19 | 115428139222691670 |
| 20 | 30 |
| 21 | 1926 |
| 22 | 20204166 |
| 23 | 24752828962220504429646 |
| 24 | 6 |
| 25 | 1032336 |
| 26 | 3124309416 |
| 27 | 149376 |
| 28 | 3816 |
| 29 | 8542182056001396008878674488976 |
| 30 | 96 |
[1,4,14,98,2,4386,18,324,60,36457092,12, 5769254382,2598,78,414,335391687123174,510, 115428139222691670,30,1926,20204166, 24752828962220504429646,6,1032336,3124309416, 149376,3816,8542182056001396008878674488976,96] |