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| n | a(n) |
|---|---|
| 1 | 1782 |
| 2 | 9978 |
| 3 | 67465 |
| 4 | 437238 |
| 5 | 2861823 |
| 6 | 18908787 |
| 7 | 124074113 |
| 8 | 813938431 |
| 9 | 5349887137 |
| 10 | 35133229405 |
| 11 | 230614838248 |
| 12 | 1514292207085 |
| 13 | 9944104422236 |
| 14 | 65294448335862 |
| 15 | 428727861006365 |
| 16 | 2815126137905917 |
| 17 | 18484827717027621 |
| 18 | 121375474722610572 |
[1782,9978,67465,437238,2861823,18908787, 124074113,813938431,5349887137,35133229405, 230614838248,1514292207085,9944104422236, 65294448335862,428727861006365,2815126137905917, 18484827717027621,121375474722610572] |