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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 18 |
| 7 | 32 |
| 8 | 57 |
| 9 | 101 |
| 10 | 179 |
| 11 | 319 |
| 12 | 566 |
| 13 | 1006 |
| 14 | 1786 |
| 15 | 3174 |
| 16 | 5638 |
| 17 | 10016 |
| 18 | 17793 |
| 19 | 31609 |
| 20 | 56153 |
| 21 | 99753 |
| 22 | 177211 |
| 23 | 314810 |
| 24 | 559255 |
| 25 | 993501 |
| 26 | 1764935 |
| 27 | 3135366 |
| 28 | 5569909 |
| 29 | 9894819 |
| 30 | 17577926 |
| 31 | 31226796 |
| 32 | 55473705 |
| 33 | 98547807 |
| 34 | 175067983 |
| 35 | 311004383 |
[1,1,2,3,6,10,18,32,57,101,179,319,566,1006,1786, 3174,5638,10016,17793,31609,56153,99753,177211, 314810,559255,993501,1764935,3135366,5569909, 9894819,17577926,31226796,55473705,98547807, 175067983,311004383] |