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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 70 |
| 4 | 1358 |
| 5 | 8642 |
| 6 | 90535 |
| 7 | 301574268 |
| 8 | 12345679 |
| 9 | 97393690 |
| 10 | 987654321 |
| 11 | 83470146831028373729 |
| 12 | 260092516563786 |
| 13 | 55088570240085399905 |
| 14 | 511536723657935856261 |
| 15 | 2754140734658436214 |
[1,5,70,1358,8642,90535,301574268,12345679, 97393690,987654321,83470146831028373729, 260092516563786,55088570240085399905, 511536723657935856261,2754140734658436214] |