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| n | a(n) |
|---|---|
| 10 | 1 |
| 11 | 57 |
| 12 | 2061 |
| 13 | 61524 |
| 14 | 1672323 |
| 15 | 43426821 |
| 16 | 1106667572 |
| 17 | 28127644296 |
| 18 | 720378419177 |
| 19 | 18715673685469 |
| 20 | 495446888127507 |
| 21 | 13403690294272704 |
| 22 | 371315688867567088 |
| 23 | 10546557230068193568 |
| 24 | 307378160401299252032 |
| 25 | 9196581430595518185328 |
| 26 | 282526394585486139996736 |
[1,57,2061,61524,1672323,43426821,1106667572, 28127644296,720378419177,18715673685469, 495446888127507,13403690294272704, 371315688867567088,10546557230068193568, 307378160401299252032,9196581430595518185328, 282526394585486139996736] |