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| n | a(n) |
|---|---|
| 1 | 4508 |
| 2 | 17704 |
| 3 | 81098 |
| 4 | 405044 |
| 5 | 2130874 |
| 6 | 11518022 |
| 7 | 63438930 |
| 8 | 353233466 |
| 9 | 1976523666 |
| 10 | 11088640448 |
| 11 | 62315269254 |
| 12 | 350508927020 |
| 13 | 1972366177122 |
| 14 | 11101445268642 |
| 15 | 62493475929562 |
| 16 | 351821536293274 |
| 17 | 1980734034606622 |
| 18 | 11151649389273578 |
[4508,17704,81098,405044,2130874,11518022, 63438930,353233466,1976523666,11088640448, 62315269254,350508927020,1972366177122, 11101445268642,62493475929562,351821536293274, 1980734034606622,11151649389273578] |