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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 30 |
| 4 | 115 |
| 5 | 495 |
| 6 | 2060 |
| 7 | 8655 |
| 8 | 36265 |
| 9 | 152070 |
| 10 | 637535 |
| 11 | 2672955 |
| 12 | 11206540 |
| 13 | 46984395 |
| 14 | 196985885 |
| 15 | 825879630 |
| 16 | 3462568315 |
| 17 | 14517103095 |
| 18 | 60864150860 |
| 19 | 255177968055 |
| 20 | 1069854658465 |
| 21 | 4485453815670 |
| 22 | 18805634739335 |
| 23 | 78844173296355 |
| 24 | 330560693585740 |
| 25 | 1385902947238995 |
[3,5,30,115,495,2060,8655,36265,152070,637535, 2672955,11206540,46984395,196985885,825879630, 3462568315,14517103095,60864150860,255177968055, 1069854658465,4485453815670,18805634739335, 78844173296355,330560693585740,1385902947238995] |