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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 28 |
| 4 | 58 |
| 5 | 98 |
| 6 | 118 |
| 7 | 212 |
| 8 | 238 |
| 9 | 350 |
| 10 | 478 |
| 11 | 883 |
| 12 | 2660 |
| 13 | 3971 |
| 14 | 21491 |
| 15 | 88843 |
[1,2,28,58,98,118,212,238,350,478,883,2660,3971, 21491,88843] |