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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 17 |
| 3 | 143 |
| 4 | 1610 |
| 5 | 22710 |
| 6 | 384605 |
| 7 | 7594224 |
| 8 | 171161319 |
| 9 | 4333369912 |
| 10 | 121706300672 |
| 11 | 3754131927947 |
| 12 | 126136021943207 |
| 13 | 4584723067123764 |
| 14 | 179223541390399501 |
| 15 | 7497293121634632330 |
| 16 | 334153612151475666156 |
| 17 | 15807274255300507355559 |
[3,17,143,1610,22710,384605,7594224,171161319, 4333369912,121706300672,3754131927947, 126136021943207,4584723067123764, 179223541390399501,7497293121634632330, 334153612151475666156,15807274255300507355559] |