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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 52 |
| 3 | 2906 |
| 4 | 373780 |
| 5 | 87852626 |
| 6 | 33093356640 |
| 7 | 18383354944364 |
| 8 | 14216420563705724 |
| 9 | 14670987605491079080 |
| 10 | 19558496206477343793824 |
| 11 | 32828323775130245290328888 |
| 12 | 67939294184937980415465539016 |
| 13 | 170381709311721603692658697682568 |
[5,52,2906,373780,87852626,33093356640, 18383354944364,14216420563705724, 14670987605491079080,19558496206477343793824, 32828323775130245290328888, 67939294184937980415465539016, 170381709311721603692658697682568] |