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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 13 |
| 4 | 621 |
| 5 | 4458 |
| 6 | 489884458 |
| 7 | 632318261 |
| 8 | 893464178 |
| 9 | 16684802253 |
| 10 | 1621069592578 |
| 11 | 2502478528946 |
| 12 | 250255842662341 |
| 13 | 1543458022195053 |
| 14 | 527851115257700546 |
[1,2,13,621,4458,489884458,632318261,893464178, 16684802253,1621069592578,2502478528946, 250255842662341,1543458022195053, 527851115257700546] |