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| n | a(n) |
|---|---|
| 1 | 2616 |
| 2 | 7652 |
| 3 | 30309 |
| 4 | 119393 |
| 5 | 403951 |
| 6 | 1293242 |
| 7 | 4098078 |
| 8 | 12497488 |
| 9 | 37528750 |
| 10 | 111339861 |
| 11 | 326552920 |
| 12 | 949466125 |
| 13 | 2746182574 |
| 14 | 7900552664 |
| 15 | 22633690594 |
| 16 | 64617935573 |
| 17 | 183950154022 |
| 18 | 522353720305 |
| 19 | 1480269737481 |
| 20 | 4187439072469 |
[2616,7652,30309,119393,403951,1293242,4098078, 12497488,37528750,111339861,326552920,949466125, 2746182574,7900552664,22633690594,64617935573, 183950154022,522353720305,1480269737481, 4187439072469] |