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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 49 |
| 4 | 789 |
| 5 | 18741 |
| 6 | 612383 |
| 7 | 26218956 |
| 8 | 1419303189 |
| 9 | 94531262917 |
| 10 | 7582017897795 |
| 11 | 719690829785016 |
| 12 | 79691175192777855 |
| 13 | 10170046938232956048 |
| 14 | 1480481369981439216732 |
| 15 | 243659154929530351237884 |
| 16 | 44987315567879408248084629 |
| 17 | 9254611189980167520327621253 |
[1,1,5,49,789,18741,612383,26218956,1419303189, 94531262917,7582017897795,719690829785016, 79691175192777855,10170046938232956048, 1480481369981439216732,243659154929530351237884, 44987315567879408248084629, 9254611189980167520327621253] |