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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 29 |
| 4 | 176 |
| 5 | 5621 |
| 6 | 122557 |
| 7 | 14694960 |
| 8 | 1181467639 |
| 9 | 516777127561 |
| 10 | 152237306877120 |
| 11 | 244601068560037129 |
| 12 | 264412894413046723521 |
| 13 | 1557984885076079288613088 |
| 14 | 6177872087977594821120364739 |
[1,2,3,29,176,5621,122557,14694960,1181467639, 516777127561,152237306877120,244601068560037129, 264412894413046723521,1557984885076079288613088, 6177872087977594821120364739] |