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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 2 |
| 4 | 4 |
| 5 | 6 |
| 6 | 5 |
| 7 | 25 |
| 8 | 27 |
| 9 | 26 |
| 10 | 676 |
| 11 | 678 |
| 12 | 677 |
| 13 | 458329 |
| 14 | 458331 |
| 15 | 458330 |
| 16 | 210066388900 |
| 17 | 210066388902 |
| 18 | 210066388901 |
| 19 | 44127887745906175987801 |
| 20 | 44127887745906175987803 |
| 21 | 44127887745906175987802 |
[1,1,3,2,4,6,5,25,27,26,676,678,677,458329,458331, 458330,210066388900,210066388902,210066388901, 44127887745906175987801,44127887745906175987803, 44127887745906175987802] |