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| n | a(n) |
|---|---|
| 0 | 524287 |
| 1 | 536347135 |
| 2 | 16659267087 |
| 3 | 121923751537 |
| 4 | 432270825142 |
| 5 | 1669779270546 |
| 6 | 2925034919093 |
| 7 | 13215281603292 |
| 8 | 52815987849274 |
| 9 | 211162780754599 |
| 10 | 373971566094226 |
| 11 | 1693443980145088 |
| 12 | 6773560256426439 |
[524287,536347135,16659267087,121923751537, 432270825142,1669779270546,2925034919093, 13215281603292,52815987849274,211162780754599, 373971566094226,1693443980145088,6773560256426439] |