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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 13 |
| 3 | 27 |
| 4 | 337 |
| 5 | 364 |
| 6 | 19265 |
| 7 | 19629 |
| 8 | 254813 |
| 9 | 529255 |
| 10 | 6605873 |
| 11 | 7135128 |
| 12 | 377632529 |
| 13 | 384767657 |
| 14 | 4994844413 |
| 15 | 10374456483 |
| 16 | 129488322209 |
| 17 | 139862778692 |
| 18 | 7402352814193 |
| 19 | 7542215592885 |
| 20 | 97908939928813 |
| 21 | 203360095450511 |
| 22 | 2538230085334945 |
| 23 | 2741590180785456 |
[1,1,13,27,337,364,19265,19629,254813,529255, 6605873,7135128,377632529,384767657,4994844413, 10374456483,129488322209,139862778692, 7402352814193,7542215592885,97908939928813, 203360095450511,2538230085334945,2741590180785456] |