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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1681 |
| 3 | 1332456 |
| 4 | 804230945 |
| 5 | 424660442975 |
| 6 | 207204257344200 |
| 7 | 95972872569551099 |
| 8 | 42856467943438387389 |
| 9 | 18633578769242938930634 |
| 10 | 7941841818960714166446386 |
| 11 | 3334133239588212397398261473 |
| 12 | 1383615906056315517856514817504 |
| 13 | 569069897400777230243560762294416 |
[1,1681,1332456,804230945,424660442975, 207204257344200,95972872569551099, 42856467943438387389,18633578769242938930634, 7941841818960714166446386, 3334133239588212397398261473, 1383615906056315517856514817504, 569069897400777230243560762294416] |