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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 225 |
| 4 | 6769 |
| 5 | 269325 |
| 6 | 13339535 |
| 7 | 790943153 |
| 8 | 54631129553 |
| 9 | 4308105301929 |
| 10 | 381922055502195 |
| 11 | 37600535086859745 |
| 12 | 4070384057007569521 |
| 13 | 480544558742733545125 |
| 14 | 61445535102359115635655 |
| 15 | 8459574446076318147830625 |
| 16 | 1247677142707273537964543265 |
| 17 | 196258640868140652967646352465 |
[1,1,11,225,6769,269325,13339535,790943153, 54631129553,4308105301929,381922055502195, 37600535086859745,4070384057007569521, 480544558742733545125,61445535102359115635655, 8459574446076318147830625, 1247677142707273537964543265, 196258640868140652967646352465] |