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A197538 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 11 |
| 4 | 131 |
| 5 | 494 |
| 6 | 12019 |
| 7 | 223832 |
| 8 | 9712913 |
| 9 | 396593739 |
| 10 | 39500650780 |
[1,5,11,131,494,12019,223832,9712913,396593739, 39500650780] |