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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 298 |
| 3 | 1401 |
| 4 | 7770 |
| 5 | 46799 |
| 6 | 276154 |
| 7 | 1620056 |
| 8 | 9548178 |
| 9 | 56314168 |
| 10 | 331850342 |
| 11 | 1955973055 |
| 12 | 11531807024 |
| 13 | 67980017387 |
| 14 | 400735877546 |
| 15 | 2362403255837 |
| 16 | 13926652047594 |
| 17 | 82098820286539 |
| 18 | 483982466683192 |
| 19 | 2853134925593095 |
[16,298,1401,7770,46799,276154,1620056,9548178, 56314168,331850342,1955973055,11531807024, 67980017387,400735877546,2362403255837, 13926652047594,82098820286539,483982466683192, 2853134925593095] |