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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 17 |
| 3 | 673 |
| 4 | 54305 |
| 5 | 7334273 |
| 6 | 1497501873 |
| 7 | 430436005665 |
| 8 | 165573876222529 |
| 9 | 82074493484054017 |
| 10 | 50922938856050558289 |
| 11 | 38644611846710150572193 |
| 12 | 35205379514991276523808353 |
| 13 | 37909794281251146499011279233 |
[1,1,17,673,54305,7334273,1497501873,430436005665, 165573876222529,82074493484054017, 50922938856050558289,38644611846710150572193, 35205379514991276523808353, 37909794281251146499011279233] |