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| n | a(n) |
|---|---|
| 1 | 22 |
| 2 | 643 |
| 3 | 15778 |
| 4 | 371569 |
| 5 | 8313608 |
| 6 | 180713080 |
| 7 | 3825884676 |
| 8 | 79714938310 |
| 9 | 1637218009622 |
| 10 | 33311576729949 |
| 11 | 672361927867110 |
[22,643,15778,371569,8313608,180713080,3825884676, 79714938310,1637218009622,33311576729949, 672361927867110] |