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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 14 |
| 4 | 43 |
| 5 | 143 |
| 6 | 512 |
| 7 | 1974 |
| 8 | 8226 |
| 9 | 37224 |
| 10 | 183456 |
| 11 | 984098 |
| 12 | 5719900 |
| 13 | 35767592 |
| 14 | 238720688 |
| 15 | 1688044543 |
| 16 | 12568879291 |
| 17 | 98065500372 |
| 18 | 798734909795 |
| 19 | 6771216844711 |
| 20 | 59602783525634 |
| 21 | 543665320690323 |
| 22 | 5129940111134397 |
| 23 | 49997388546860666 |
| 24 | 502624275694700979 |
[1,2,5,14,43,143,512,1974,8226,37224,183456, 984098,5719900,35767592,238720688,1688044543, 12568879291,98065500372,798734909795, 6771216844711,59602783525634,543665320690323, 5129940111134397,49997388546860666, 502624275694700979] |