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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 36 |
| 3 | 1311 |
| 4 | 27056 |
| 5 | 532547 |
| 6 | 12872510 |
| 7 | 327579980 |
| 8 | 8009744714 |
| 9 | 193577903773 |
| 10 | 4737630434523 |
| 11 | 116753918774537 |
| 12 | 2874720279855525 |
| 13 | 70727573042967301 |
| 14 | 1741732763961365190 |
| 15 | 42927969047213245402 |
| 16 | 1058288844307696250301 |
[1,36,1311,27056,532547,12872510,327579980, 8009744714,193577903773,4737630434523, 116753918774537,2874720279855525, 70727573042967301,1741732763961365190, 42927969047213245402,1058288844307696250301] |