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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 9 |
| 5 | 104 |
| 6 | 510 |
| 7 | 1413 |
| 8 | 2386 |
| 9 | 40447 |
| 10 | 87110 |
| 11 | 124975 |
| 12 | 1565154 |
| 13 | 1766158 |
| 14 | 2440919 |
| 15 | 2637001 |
| 16 | 9192874 |
| 17 | 24998746 |
| 18 | 73973182 |
| 19 | 88828340 |
| 20 | 432049320 |
| 21 | 470421590 |
| 22 | 477600793 |
| 23 | 3313014448 |
| 24 | 4571423959 |
| 25 | 28839435286 |
| 26 | 40818751774 |
[2,3,7,9,104,510,1413,2386,40447,87110,124975, 1565154,1766158,2440919,2637001,9192874,24998746, 73973182,88828340,432049320,470421590,477600793, 3313014448,4571423959,28839435286,40818751774] |