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| n | a(n) |
|---|---|
| 1 | 2792 |
| 2 | 6978 |
| 3 | 22623 |
| 4 | 81441 |
| 5 | 318274 |
| 6 | 1274571 |
| 7 | 5243537 |
| 8 | 21992185 |
| 9 | 92865411 |
| 10 | 394359153 |
| 11 | 1680557237 |
| 12 | 7170758789 |
| 13 | 30633016745 |
| 14 | 130953875907 |
| 15 | 559929985978 |
| 16 | 2394657771735 |
| 17 | 10242794843158 |
| 18 | 43813780754441 |
| 19 | 187421784079704 |
[2792,6978,22623,81441,318274,1274571,5243537, 21992185,92865411,394359153,1680557237,7170758789, 30633016745,130953875907,559929985978, 2394657771735,10242794843158,43813780754441, 187421784079704] |