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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 25 |
| 3 | 143 |
| 4 | 839 |
| 5 | 10135 |
| 6 | 106047 |
| 7 | 1015445 |
| 8 | 9974135 |
| 9 | 100003019 |
| 10 | 1002241579 |
| 11 | 9943531087 |
[1,25,143,839,10135,106047,1015445,9974135, 100003019,1002241579,9943531087] |