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| n | a(n) |
|---|---|
| 9 | 0 |
| 10 | 1 |
| 11 | 259 |
| 12 | 7851 |
| 13 | 123693 |
| 14 | 1517480 |
| 15 | 16628928 |
| 16 | 172861375 |
| 17 | 1757583339 |
| 18 | 17780116911 |
| 19 | 180778826049 |
| 20 | 1858914009077 |
| 21 | 19407229306905 |
| 22 | 206203531592425 |
| 23 | 2232778235440364 |
| 24 | 24655217395787251 |
| 25 | 277719538910592762 |
| 26 | 3191229583066629810 |
| 27 | 37404691679158439649 |
[0,1,259,7851,123693,1517480,16628928,172861375, 1757583339,17780116911,180778826049,1858914009077, 19407229306905,206203531592425,2232778235440364, 24655217395787251,277719538910592762, 3191229583066629810,37404691679158439649] |