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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 19 |
| 3 | 109 |
| 4 | 541 |
| 5 | 4769 |
| 6 | 40483 |
| 7 | 327223 |
| 8 | 2590527 |
| 9 | 20896283 |
| 10 | 167580009 |
| 11 | 1349709835 |
| 12 | 11155226611 |
| 13 | 93502733191 |
| 14 | 786281486125 |
[1,19,109,541,4769,40483,327223,2590527,20896283, 167580009,1349709835,11155226611,93502733191, 786281486125] |