| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 10 |
| 3 | 92 |
| 4 | 1354 |
| 5 | 29252 |
| 6 | 873964 |
| 7 | 34555880 |
| 8 | 1748176714 |
| 9 | 110183215988 |
| 10 | 8467704986260 |
| 11 | 779536758060920 |
| 12 | 84699429189141100 |
| 13 | 10725613123706081720 |
| 14 | 1565870044943751242440 |
| 15 | 261092436660169105108592 |
| 16 | 49312362996510562406915914 |
| 17 | 10473104312824253527997052500 |
[1,2,10,92,1354,29252,873964,34555880,1748176714, 110183215988,8467704986260,779536758060920, 84699429189141100,10725613123706081720, 1565870044943751242440,261092436660169105108592, 49312362996510562406915914, 10473104312824253527997052500] |