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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 9 |
| 6 | 16 |
| 7 | 29 |
| 8 | 46 |
| 9 | 82 |
| 10 | 145 |
| 11 | 237 |
| 12 | 421 |
| 13 | 737 |
| 14 | 1228 |
| 15 | 2171 |
| 16 | 3788 |
| 17 | 6388 |
| 18 | 11253 |
| 19 | 19617 |
| 20 | 33344 |
| 21 | 58597 |
| 22 | 102141 |
| 23 | 174571 |
| 24 | 306294 |
| 25 | 533976 |
| 26 | 916309 |
| 27 | 1605975 |
| 28 | 2800260 |
| 29 | 4820020 |
| 30 | 8441365 |
| 31 | 14721208 |
| 32 | 25399974 |
| 33 | 44458045 |
| 34 | 77542951 |
[1,1,2,3,6,9,16,29,46,82,145,237,421,737,1228, 2171,3788,6388,11253,19617,33344,58597,102141, 174571,306294,533976,916309,1605975,2800260, 4820020,8441365,14721208,25399974,44458045, 77542951] |