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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 19 |
| 3 | 271 |
| 4 | 4504 |
| 5 | 79201 |
| 6 | 1419889 |
| 7 | 25622596 |
| 8 | 463384804 |
| 9 | 8386411051 |
| 10 | 151815188839 |
| 11 | 2748457460746 |
| 12 | 49759306786354 |
| 13 | 900872721644401 |
| 14 | 16309994546050789 |
| 15 | 295287194569964896 |
| 16 | 5346081195735699904 |
| 17 | 96789118201657881751 |
[3,19,271,4504,79201,1419889,25622596,463384804, 8386411051,151815188839,2748457460746, 49759306786354,900872721644401,16309994546050789, 295287194569964896,5346081195735699904, 96789118201657881751] |