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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 22 |
| 5 | 43 |
| 6 | 81 |
| 7 | 150 |
| 8 | 273 |
| 9 | 491 |
| 10 | 874 |
| 11 | 1543 |
| 12 | 2705 |
| 13 | 4714 |
| 14 | 8173 |
| 15 | 14107 |
| 16 | 24254 |
| 17 | 41555 |
| 18 | 70977 |
| 19 | 120894 |
| 20 | 205401 |
| 21 | 348187 |
| 22 | 589010 |
| 23 | 994511 |
| 24 | 1676257 |
| 25 | 2820818 |
| 26 | 4739861 |
| 27 | 7953515 |
| 28 | 13328998 |
| 29 | 22310971 |
| 30 | 37304049 |
| 31 | 62307558 |
| 32 | 103968225 |
| 33 | 173324939 |
[0,2,5,11,22,43,81,150,273,491,874,1543,2705,4714, 8173,14107,24254,41555,70977,120894,205401,348187, 589010,994511,1676257,2820818,4739861,7953515, 13328998,22310971,37304049,62307558,103968225, 173324939] |