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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 49 |
| 4 | 797 |
| 5 | 19417 |
| 6 | 661829 |
| 7 | 30067105 |
| 8 | 1755847661 |
| 9 | 128153307433 |
| 10 | 11430887275733 |
| 11 | 1223433282301681 |
| 12 | 154741998546660605 |
| 13 | 22833118232808363769 |
| 14 | 3887374029443206242917 |
| 15 | 756359660427618330221377 |
| 16 | 166781979021653656537782029 |
| 17 | 41372815623877107580771950025 |
[1,1,5,49,797,19417,661829,30067105,1755847661, 128153307433,11430887275733,1223433282301681, 154741998546660605,22833118232808363769, 3887374029443206242917,756359660427618330221377, 166781979021653656537782029, 41372815623877107580771950025] |