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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 10 |
| 3 | 207 |
| 4 | 6856 |
| 5 | 302345 |
| 6 | 17812656 |
| 7 | 1384059775 |
| 8 | 131612023936 |
| 9 | 30607186160529 |
| 10 | 9712391319942400 |
| 11 | 2685817593368889551 |
| 12 | 809491207939940828160 |
| 13 | 280106645752842329055193 |
| 14 | 99175751774345673351479296 |
| 15 | 36958774352800067430488661375 |
| 16 | 15213494922728791702295969038336 |
[1,1,10,207,6856,302345,17812656,1384059775, 131612023936,30607186160529,9712391319942400, 2685817593368889551,809491207939940828160, 280106645752842329055193, 99175751774345673351479296, 36958774352800067430488661375, 15213494922728791702295969038336] |