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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 167 |
| 4 | 553 |
| 5 | 13655 |
| 6 | 100967 |
| 7 | 1160869 |
| 8 | 22885339 |
| 9 | 1015565041 |
| 10 | 2087559455 |
| 11 | 113349261019 |
| 12 | 3358906732007 |
| 13 | 1141662738301 |
| 14 | 19755194336321 |
| 15 | 1465720275945305 |
| 16 | 495933038673019 |
| 17 | 41736492051778129 |
| 18 | 3843447765945901 |
[1,11,167,553,13655,100967,1160869,22885339, 1015565041,2087559455,113349261019,3358906732007, 1141662738301,19755194336321,1465720275945305, 495933038673019,41736492051778129, 3843447765945901] |