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| n | a(n) |
|---|---|
| 10 | 9 |
| 11 | 45 |
| 12 | 539 |
| 13 | 3290 |
| 14 | 25234 |
| 15 | 156743 |
| 16 | 1042823 |
| 17 | 6374389 |
| 18 | 40710734 |
| 19 | 245996972 |
| 20 | 1533537330 |
| 21 | 9295148728 |
| 22 | 57412881670 |
| 23 | 349869872571 |
| 24 | 2159393201713 |
| 25 | 13252915145611 |
| 26 | 82161769477646 |
| 27 | 508497521855467 |
| 28 | 3174435344149894 |
| 29 | 19827435510586970 |
| 30 | 124802677329672826 |
[9,45,539,3290,25234,156743,1042823,6374389, 40710734,245996972,1533537330,9295148728, 57412881670,349869872571,2159393201713, 13252915145611,82161769477646,508497521855467, 3174435344149894,19827435510586970, 124802677329672826] |