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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 61 |
| 4 | 421 |
| 5 | 1524085621 |
| 6 | 10 |
| 7 | 27 |
| 8 | 187 |
| 9 | 2545622 |
| 10 | 12 |
| 11 | 153 |
| 12 | 35557 |
| 13 | 363121 |
| 14 | 223577456873 |
| 15 | 44753756873 |
[2,5,61,421,1524085621,10,27,187,2545622,12,153, 35557,363121,223577456873,44753756873] |