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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 5 |
| 7 | 7 |
| 8 | 17 |
| 9 | 29 |
| 10 | 66 |
| 11 | 126 |
| 12 | 284 |
| 13 | 568 |
| 14 | 1281 |
| 15 | 2662 |
| 16 | 6017 |
| 17 | 12756 |
| 18 | 28992 |
| 19 | 62621 |
| 20 | 142801 |
| 21 | 312129 |
| 22 | 714760 |
| 23 | 1578706 |
| 24 | 3626762 |
| 25 | 8074580 |
| 26 | 18606900 |
| 27 | 41716797 |
| 28 | 96374235 |
| 29 | 217271226 |
| 30 | 503159109 |
| 31 | 1139963936 |
| 32 | 2645397326 |
| 33 | 6018491701 |
[0,1,1,1,2,2,5,7,17,29,66,126,284,568,1281,2662, 6017,12756,28992,62621,142801,312129,714760, 1578706,3626762,8074580,18606900,41716797, 96374235,217271226,503159109,1139963936, 2645397326,6018491701] |