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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 16 |
| 4 | 50 |
| 5 | 160 |
| 6 | 511 |
| 7 | 1634 |
| 8 | 5226 |
| 9 | 16716 |
| 10 | 53471 |
| 11 | 171045 |
| 12 | 547149 |
| 13 | 1750258 |
| 14 | 5598852 |
| 15 | 17910021 |
| 16 | 57291907 |
| 17 | 183269625 |
| 18 | 586256561 |
| 19 | 1875361283 |
| 20 | 5999045795 |
| 21 | 19190195958 |
| 22 | 61387032829 |
| 23 | 196369427849 |
| 24 | 628161199864 |
| 25 | 2009408986694 |
| 26 | 6427847623748 |
[1,5,16,50,160,511,1634,5226,16716,53471,171045, 547149,1750258,5598852,17910021,57291907, 183269625,586256561,1875361283,5999045795, 19190195958,61387032829,196369427849,628161199864, 2009408986694,6427847623748] |