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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 3 |
| 5 | 11 |
| 6 | 14 |
| 7 | 33 |
| 8 | 43 |
| 9 | 82 |
| 10 | 141 |
| 11 | 260 |
| 12 | 514 |
| 13 | 1049 |
| 14 | 2321 |
| 15 | 4789 |
| 16 | 10454 |
| 17 | 21735 |
| 18 | 46213 |
| 19 | 94782 |
| 20 | 196060 |
| 21 | 398662 |
| 22 | 810178 |
| 23 | 1631089 |
| 24 | 3278372 |
| 25 | 6556096 |
| 26 | 13088339 |
| 27 | 26063238 |
| 28 | 51824061 |
| 29 | 102926784 |
| 30 | 204239173 |
| 31 | 405087125 |
| 32 | 803109813 |
| 33 | 1592179369 |
| 34 | 3156298826 |
| 35 | 6258390137 |
[1,0,0,2,3,11,14,33,43,82,141,260,514,1049,2321, 4789,10454,21735,46213,94782,196060,398662,810178, 1631089,3278372,6556096,13088339,26063238, 51824061,102926784,204239173,405087125,803109813, 1592179369,3156298826,6258390137] |