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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 49 |
| 3 | 597 |
| 4 | 8129 |
| 5 | 118469 |
| 6 | 1807665 |
| 7 | 28512213 |
| 8 | 461141761 |
| 9 | 7606159365 |
| 10 | 127454706609 |
| 11 | 2163636679125 |
| 12 | 37130370808257 |
| 13 | 643099703566277 |
| 14 | 11227141735655345 |
| 15 | 197356077159062613 |
| 16 | 3490230884900117505 |
| 17 | 62054912214781757957 |
| 18 | 1108568475427756051761 |
[1,5,49,597,8129,118469,1807665,28512213, 461141761,7606159365,127454706609,2163636679125, 37130370808257,643099703566277,11227141735655345, 197356077159062613,3490230884900117505, 62054912214781757957,1108568475427756051761] |