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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 59049 |
| 2 | 9765625 |
| 3 | 282475249 |
| 4 | 3486784401 |
| 5 | 25937424601 |
| 6 | 137858491849 |
| 7 | 576650390625 |
| 8 | 2015993900449 |
| 9 | 6131066257801 |
| 10 | 16679880978201 |
| 11 | 41426511213649 |
| 12 | 95367431640625 |
| 13 | 205891132094649 |
| 14 | 420707233300201 |
| 15 | 819628286980801 |
| 16 | 1531578985264449 |
| 17 | 2758547353515625 |
| 18 | 4808584372417849 |
[1,59049,9765625,282475249,3486784401,25937424601, 137858491849,576650390625,2015993900449, 6131066257801,16679880978201,41426511213649, 95367431640625,205891132094649,420707233300201, 819628286980801,1531578985264449,2758547353515625, 4808584372417849] |