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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 5 |
| 6 | 11 |
| 7 | 21 |
| 8 | 40 |
| 9 | 85 |
| 10 | 197 |
| 11 | 457 |
| 12 | 1028 |
| 13 | 2289 |
| 14 | 5193 |
| 15 | 12069 |
| 16 | 28338 |
| 17 | 66445 |
| 18 | 155563 |
| 19 | 365701 |
| 20 | 865815 |
| 21 | 2061133 |
| 22 | 4919431 |
| 23 | 11758741 |
| 24 | 28165412 |
| 25 | 67657225 |
| 26 | 162977081 |
| 27 | 393445865 |
| 28 | 951438682 |
| 29 | 2304494349 |
| 30 | 5591221729 |
| 31 | 13588455861 |
| 32 | 33075115578 |
| 33 | 80616857525 |
| 34 | 196742749155 |
[1,1,1,1,2,5,11,21,40,85,197,457,1028,2289,5193, 12069,28338,66445,155563,365701,865815,2061133, 4919431,11758741,28165412,67657225,162977081, 393445865,951438682,2304494349,5591221729, 13588455861,33075115578,80616857525,196742749155] |