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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 52 |
| 3 | 2906 |
| 4 | 373780 |
| 5 | 87852626 |
| 6 | 33093356640 |
| 7 | 18383354934430 |
| 8 | 14216420560211868 |
| 9 | 14670987603972303070 |
| 10 | 19558496205580909812744 |
| 11 | 32828323774419481541135978 |
| 12 | 67939294184199439807451132308 |
| 13 | 170381709310740181061939305134514 |
| 14 | 510275358861788633812686061715278224 |
[1,5,52,2906,373780,87852626,33093356640, 18383354934430,14216420560211868, 14670987603972303070,19558496205580909812744, 32828323774419481541135978, 67939294184199439807451132308, 170381709310740181061939305134514, 510275358861788633812686061715278224] |