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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 57 |
| 3 | 58 |
| 4 | 3305 |
| 5 | 3363 |
| 6 | 191633 |
| 7 | 194996 |
| 8 | 11111409 |
| 9 | 11306405 |
| 10 | 644270089 |
| 11 | 655576494 |
| 12 | 37356553753 |
| 13 | 38012130247 |
| 14 | 2166035847585 |
| 15 | 2204047977832 |
| 16 | 125592722606177 |
| 17 | 127796770584009 |
| 18 | 7282211875310681 |
| 19 | 7410008645894690 |
| 20 | 422242696045413321 |
[1,1,57,58,3305,3363,191633,194996,11111409, 11306405,644270089,655576494,37356553753, 38012130247,2166035847585,2204047977832, 125592722606177,127796770584009,7282211875310681, 7410008645894690,422242696045413321] |