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| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 121 |
| 3 | 14329 |
| 4 | 711068 |
| 5 | 45132986 |
| 6 | 2546661201 |
| 7 | 149731056598 |
| 8 | 8620411258657 |
| 9 | 499872831041401 |
| 10 | 28871184063697655 |
| 11 | 1669447411395132846 |
| 12 | 96462826329498703173 |
| 13 | 5574683427373667949652 |
| 14 | 322122388885074528092794 |
[15,121,14329,711068,45132986,2546661201, 149731056598,8620411258657,499872831041401, 28871184063697655,1669447411395132846, 96462826329498703173,5574683427373667949652, 322122388885074528092794] |