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| n | a(n) |
|---|---|
| 1 | 231680 |
| 2 | 2183186 |
| 3 | 12536462 |
| 4 | 71637702 |
| 5 | 395458926 |
| 6 | 2568519258 |
| 7 | 15211412806 |
| 8 | 83900667490 |
| 9 | 481534162516 |
| 10 | 2970670373368 |
| 11 | 17490078291240 |
| 12 | 99292021436308 |
| 13 | 577450800371012 |
| 14 | 3466510884084752 |
| 15 | 20334046128755916 |
| 16 | 117196890875285924 |
[231680,2183186,12536462,71637702,395458926, 2568519258,15211412806,83900667490,481534162516, 2970670373368,17490078291240,99292021436308, 577450800371012,3466510884084752, 20334046128755916,117196890875285924] |