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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 117 |
| 3 | 1869 |
| 4 | 34749 |
| 5 | 730053 |
| 6 | 16995897 |
| 7 | 432358641 |
| 8 | 11893539177 |
| 9 | 350916266097 |
| 10 | 11032530974829 |
| 11 | 367608423899781 |
| 12 | 12923308003116933 |
| 13 | 477498557451291021 |
| 14 | 18481768753740402321 |
| 15 | 747199095434993029257 |
[1,9,117,1869,34749,730053,16995897,432358641, 11893539177,350916266097,11032530974829, 367608423899781,12923308003116933, 477498557451291021,18481768753740402321, 747199095434993029257] |