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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 17 |
| 2 | 199 |
| 3 | 1997 |
| 4 | 18487 |
| 5 | 163205 |
| 6 | 1398223 |
| 7 | 11743469 |
| 8 | 97300423 |
| 9 | 798539093 |
| 10 | 6509186047 |
| 11 | 52798905341 |
| 12 | 426744275959 |
| 13 | 3440074001381 |
| 14 | 27677315556271 |
| 15 | 222358880070413 |
| 16 | 1784513217331495 |
| 17 | 14309958928401269 |
| 18 | 114682790953126495 |
[1,17,199,1997,18487,163205,1398223,11743469, 97300423,798539093,6509186047,52798905341, 426744275959,3440074001381,27677315556271, 222358880070413,1784513217331495, 14309958928401269,114682790953126495] |