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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 139 |
| 3 | 8489 |
| 4 | 197429 |
| 5 | 3291920 |
| 6 | 47427679 |
| 7 | 622370435 |
| 8 | 7668286112 |
| 9 | 90290912746 |
| 10 | 1027352752428 |
| 11 | 11380794989335 |
| 12 | 123393170675013 |
| 13 | 1314462960605872 |
| 14 | 13797631263124064 |
| 15 | 143031796147222229 |
| 16 | 1466895880313669174 |
[1,139,8489,197429,3291920,47427679,622370435, 7668286112,90290912746,1027352752428, 11380794989335,123393170675013,1314462960605872, 13797631263124064,143031796147222229, 1466895880313669174] |