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| n | a(n) |
|---|---|
| 1 | 2025 |
| 2 | 8049 |
| 3 | 29145 |
| 4 | 98481 |
| 5 | 318585 |
| 6 | 1003089 |
| 7 | 3104985 |
| 8 | 9507441 |
| 9 | 28908345 |
| 10 | 87498129 |
| 11 | 264041625 |
| 12 | 795220401 |
| 13 | 2391853305 |
| 14 | 7187945169 |
| 15 | 21588607065 |
| 16 | 64815365361 |
| 17 | 194545185465 |
| 18 | 583833736209 |
| 19 | 1751897569305 |
| 20 | 5256485430321 |
| 21 | 15771041736825 |
[2025,8049,29145,98481,318585,1003089,3104985, 9507441,28908345,87498129,264041625,795220401, 2391853305,7187945169,21588607065,64815365361, 194545185465,583833736209,1751897569305, 5256485430321,15771041736825] |