| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 123 |
| 3 | 1267 |
| 4 | 11573 |
| 5 | 320641 |
| 6 | 8061815 |
| 7 | 133236904 |
| 8 | 2362292183 |
| 9 | 49521535540 |
| 10 | 1008039449030 |
| 11 | 19153337324312 |
| 12 | 370373113285491 |
| 13 | 7361128495277353 |
| 14 | 145077471406639845 |
| 15 | 2828271548979912832 |
| 16 | 55370542134158497160 |
[1,123,1267,11573,320641,8061815,133236904, 2362292183,49521535540,1008039449030, 19153337324312,370373113285491,7361128495277353, 145077471406639845,2828271548979912832, 55370542134158497160] |