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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 82 |
| 5 | 87 |
| 6 | 15707 |
| 7 | 15714 |
| 8 | 5780508 |
| 9 | 5780517 |
| 10 | 3492564909 |
| 11 | 3492564920 |
| 12 | 3141920941630 |
| 13 | 3141920941643 |
| 14 | 3940518306640919 |
| 15 | 3940518306640934 |
| 16 | 6572348874019531544 |
| 17 | 6572348874019531561 |
| 18 | 14069656800941744522553 |
| 19 | 14069656800941744522572 |
| 20 | 37604043114346899937878154 |
[1,1,4,82,87,15707,15714,5780508,5780517, 3492564909,3492564920,3141920941630,3141920941643, 3940518306640919,3940518306640934, 6572348874019531544,6572348874019531561, 14069656800941744522553,14069656800941744522572, 37604043114346899937878154] |