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| n | a(n) |
|---|---|
| 1 | 172081 |
| 2 | 1773289 |
| 3 | 4463641 |
| 4 | 295643089 |
| 5 | 798770161 |
| 6 | 1976295241 |
| 7 | 122160500281 |
| 8 | 374464040689 |
| 9 | 444722065201 |
| 10 | 676328168881 |
| 11 | 1009514855521 |
| 12 | 2382986541601 |
| 13 | 3022286597929 |
| 14 | 9031805532361 |
| 15 | 33648448111489 |
| 16 | 155773422536761 |
| 17 | 206932492972801 |
| 18 | 366715617643441 |
| 19 | 708083570971801 |
[172081,1773289,4463641,295643089,798770161, 1976295241,122160500281,374464040689,444722065201, 676328168881,1009514855521,2382986541601, 3022286597929,9031805532361,33648448111489, 155773422536761,206932492972801,366715617643441, 708083570971801] |