| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 209 |
| 3 | 1891 |
| 4 | 48148 |
| 5 | 1117343 |
| 6 | 25891309 |
| 7 | 612656116 |
| 8 | 14339915102 |
| 9 | 337239061289 |
| 10 | 7920819385086 |
| 11 | 186084400183300 |
| 12 | 4371833121122134 |
| 13 | 102706718977110820 |
| 14 | 2412930568949026303 |
| 15 | 56687408908124252893 |
| 16 | 1331772655188493216188 |
[0,209,1891,48148,1117343,25891309,612656116, 14339915102,337239061289,7920819385086, 186084400183300,4371833121122134, 102706718977110820,2412930568949026303, 56687408908124252893,1331772655188493216188] |