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| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 1 |
| 11 | 21 |
| 12 | 98 |
| 13 | 568 |
| 14 | 2858 |
| 15 | 14128 |
| 16 | 67556 |
| 17 | 316490 |
| 18 | 1456952 |
| 19 | 6612520 |
| 20 | 29652948 |
| 21 | 131613716 |
| 22 | 578987886 |
| 23 | 2527351698 |
| 24 | 10956840549 |
| 25 | 47212399022 |
| 26 | 202328867061 |
| 27 | 862840720214 |
| 28 | 3663367687951 |
| 29 | 15491222396862 |
| 30 | 65268041732681 |
| 31 | 274068630138339 |
| 32 | 1147305286307251 |
[1,1,21,98,568,2858,14128,67556,316490,1456952, 6612520,29652948,131613716,578987886,2527351698, 10956840549,47212399022,202328867061,862840720214, 3663367687951,15491222396862,65268041732681, 274068630138339,1147305286307251] |