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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5005 |
| 2 | 90135045 |
| 3 | 1868031888580 |
| 4 | 41029265920459845 |
| 5 | 930412757112634271880 |
| 6 | 21530356169879586359196900 |
| 7 | 505246886354870326510495672020 |
| 8 | 11978661740397444504877351546799685 |
| 9 | 286230481407830055989299003347834843760 |
| 10 | 6881913823453630116611423770861944135246920 |
[1,5005,90135045,1868031888580,41029265920459845, 930412757112634271880,21530356169879586359196900, 505246886354870326510495672020, 11978661740397444504877351546799685, 286230481407830055989299003347834843760, 6881913823453630116611423770861944135246920] |