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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 169 |
| 3 | 1209 |
| 4 | 10732 |
| 5 | 97764 |
| 6 | 845531 |
| 7 | 7426986 |
| 8 | 65480503 |
| 9 | 574725752 |
| 10 | 5050028956 |
| 11 | 44391722285 |
| 12 | 390072820213 |
| 13 | 3427866363455 |
| 14 | 30124436697657 |
| 15 | 264728435711181 |
| 16 | 2326400950974628 |
| 17 | 20444198985083330 |
| 18 | 179661312288590309 |
[13,169,1209,10732,97764,845531,7426986,65480503, 574725752,5050028956,44391722285,390072820213, 3427866363455,30124436697657,264728435711181, 2326400950974628,20444198985083330, 179661312288590309] |