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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 17 |
| 7 | 30 |
| 8 | 52 |
| 9 | 90 |
| 10 | 156 |
| 11 | 271 |
| 12 | 470 |
| 13 | 815 |
| 14 | 1414 |
| 15 | 2453 |
| 16 | 4255 |
| 17 | 7381 |
| 18 | 12804 |
| 19 | 22211 |
| 20 | 38529 |
| 21 | 66836 |
| 22 | 115940 |
| 23 | 201120 |
| 24 | 348881 |
| 25 | 605201 |
| 26 | 1049837 |
| 27 | 1821143 |
| 28 | 3159121 |
| 29 | 5480100 |
| 30 | 9506282 |
| 31 | 16490465 |
| 32 | 28605867 |
| 33 | 49622350 |
| 34 | 86079461 |
| 35 | 149321296 |
[1,1,2,3,6,10,17,30,52,90,156,271,470,815,1414, 2453,4255,7381,12804,22211,38529,66836,115940, 201120,348881,605201,1049837,1821143,3159121, 5480100,9506282,16490465,28605867,49622350, 86079461,149321296] |