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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 31 |
| 3 | 47 |
| 4 | 723 |
| 5 | 4992 |
| 6 | 89296 |
| 7 | 210482 |
| 8 | 384340 |
| 9 | 110702779 |
| 10 | 419970418 |
[1,31,47,723,4992,89296,210482,384340,110702779, 419970418] |