n | a(n) |
---|---|
1 | 1 |
2 | 217 |
3 | 9478 |
4 | 185094 |
5 | 2185470 |
6 | 18188478 |
7 | 116799606 |
8 | 613592694 |
9 | 2745339597 |
10 | 10769363605 |
11 | 37850444632 |
12 | 121189368664 |
13 | 358136205336 |
14 | 987118431768 |
15 | 2559344776920 |
16 | 6286103520984 |
17 | 14712254089533 |
18 | 32974344717237 |
19 | 71073599975686 |
20 | 147860902015750 |
21 | 297836101312750 |
[1,217,9478,185094,2185470,18188478,116799606, 613592694,2745339597,10769363605,37850444632, 121189368664,358136205336,987118431768, 2559344776920,6286103520984,14712254089533, 32974344717237,71073599975686,147860902015750, 297836101312750] |