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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 35 |
| 3 | 385 |
| 4 | 25025 |
| 5 | 1616615 |
| 6 | 260275015 |
| 7 | 929553625 |
| 8 | 835668708875 |
| 9 | 321732452916875 |
| 10 | 30950661970603375 |
| 11 | 4960547004924886375 |
| 12 | 1165728546157348298125 |
| 13 | 74696298380697779410625 |
| 14 | 31105672825676289568853125 |
| 15 | 6973891847516624121336870625 |
| 16 | 2977851818889598499810843756875 |
[1,1,35,385,25025,1616615,260275015,929553625, 835668708875,321732452916875,30950661970603375, 4960547004924886375,1165728546157348298125, 74696298380697779410625, 31105672825676289568853125, 6973891847516624121336870625, 2977851818889598499810843756875] |