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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 91 |
| 3 | 1914 |
| 4 | 78040 |
| 5 | 5106100 |
| 6 | 458833583 |
| 7 | 47733362102 |
| 8 | 5135607790491 |
| 9 | 536688063735206 |
| 10 | 52867612881649880 |
| 11 | 4850192749006633026 |
| 12 | 413148808781907131214 |
| 13 | 32714696961125699522402 |
| 14 | 2415248468700135331809589 |
| 15 | 166850889356231007150502822 |
| 16 | 10825333142119897114905960931 |
[1,6,91,1914,78040,5106100,458833583,47733362102, 5135607790491,536688063735206,52867612881649880, 4850192749006633026,413148808781907131214, 32714696961125699522402,2415248468700135331809589, 166850889356231007150502822, 10825333142119897114905960931] |