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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 53 |
| 3 | 450 |
| 4 | 4578 |
| 5 | 44379 |
| 6 | 385212 |
| 7 | 2925969 |
| 8 | 19641271 |
| 9 | 118614860 |
| 10 | 654214381 |
| 11 | 3334753195 |
| 12 | 15858202072 |
| 13 | 70892618881 |
| 14 | 299805425605 |
| 15 | 1205758757487 |
| 16 | 4632388331446 |
| 17 | 17066069541973 |
| 18 | 60489294799563 |
| 19 | 206864212649513 |
[11,53,450,4578,44379,385212,2925969,19641271, 118614860,654214381,3334753195,15858202072, 70892618881,299805425605,1205758757487, 4632388331446,17066069541973,60489294799563, 206864212649513] |