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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 13 |
| 2 | 172 |
| 3 | 39216 |
| 4 | 11016972197 |
| 5 | 134283233503741443791 |
| 6 | 18872603108304707287590736836379382332539 |
| 7 | 773806129529571836706640292961775806691343199188996534429569375589794450652266246 |
[6,13,172,39216,11016972197,134283233503741443791, 18872603108304707287590736836379382332539, 77380612952957183670664029296177580669134319918899\ 6534429569375589794450652266246] |