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| n | a(n) |
|---|---|
| 1 | 84 |
| 2 | 517 |
| 3 | 2504 |
| 4 | 10259 |
| 5 | 36681 |
| 6 | 117336 |
| 7 | 342631 |
| 8 | 926325 |
| 9 | 2343595 |
| 10 | 5598526 |
| 11 | 12716726 |
| 12 | 27621995 |
| 13 | 57655180 |
| 14 | 116108839 |
| 15 | 226372400 |
| 16 | 428556841 |
| 17 | 789816850 |
| 18 | 1420177257 |
| 19 | 2496385282 |
| 20 | 4297171239 |
| 21 | 7254711157 |
| 22 | 12028735960 |
| 23 | 19611652708 |
| 24 | 31476118410 |
[84,517,2504,10259,36681,117336,342631,926325, 2343595,5598526,12716726,27621995,57655180, 116108839,226372400,428556841,789816850, 1420177257,2496385282,4297171239,7254711157, 12028735960,19611652708,31476118410] |