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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 8 |
| 4 | 3375 |
| 5 | 7645373 |
| 6 | 9393931 |
| 7 | 97972181 |
| 8 | 20683643625 |
| 9 | 25803133875 |
| 10 | 56698339857713 |
| 11 | 57570584012397 |
| 12 | 69807297234375 |
| 13 | 155568963323390625 |
| 14 | 158134170512197125 |
| 15 | 191356897019781375 |
| 16 | 426879024292396457153 |
[0,1,8,3375,7645373,9393931,97972181,20683643625, 25803133875,56698339857713,57570584012397, 69807297234375,155568963323390625, 158134170512197125,191356897019781375, 426879024292396457153] |