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| n | a(n) |
|---|---|
| 1 | 303 |
| 2 | 1735 |
| 3 | 10466 |
| 4 | 66831 |
| 5 | 428497 |
| 6 | 2832722 |
| 7 | 18682733 |
| 8 | 125843583 |
| 9 | 844258374 |
| 10 | 5747581507 |
| 11 | 38959859799 |
| 12 | 266780373966 |
| 13 | 1819543862147 |
| 14 | 12497585083387 |
| 15 | 85550631105026 |
| 16 | 588510997758869 |
| 17 | 4037376346765561 |
| 18 | 27793795792256912 |
[303,1735,10466,66831,428497,2832722,18682733, 125843583,844258374,5747581507,38959859799, 266780373966,1819543862147,12497585083387, 85550631105026,588510997758869,4037376346765561, 27793795792256912] |