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| n | a(n) |
|---|---|
| 1 | 37 |
| 2 | 145 |
| 3 | 1009 |
| 4 | 42661 |
| 5 | 413893 |
| 6 | 7914829 |
| 7 | 281951533 |
| 8 | 7901300449 |
| 9 | 257187953521 |
[37,145,1009,42661,413893,7914829,281951533, 7901300449,257187953521] |