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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 249 |
| 3 | 3417 |
| 4 | 78101 |
| 5 | 1353761 |
| 6 | 26456233 |
| 7 | 534127371 |
| 8 | 10702459629 |
| 9 | 210165095895 |
| 10 | 4163535286913 |
| 11 | 82989760611503 |
| 12 | 1647146588097919 |
| 13 | 32676624824656185 |
| 14 | 648733177064446543 |
| 15 | 12886037922010071897 |
| 16 | 255825582321287654665 |
[1,249,3417,78101,1353761,26456233,534127371, 10702459629,210165095895,4163535286913, 82989760611503,1647146588097919,32676624824656185, 648733177064446543,12886037922010071897, 255825582321287654665] |