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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 15 |
| 5 | 29 |
| 6 | 56 |
| 7 | 103 |
| 8 | 192 |
| 9 | 364 |
| 10 | 668 |
| 11 | 1222 |
| 12 | 2233 |
| 13 | 3987 |
| 14 | 7138 |
| 15 | 12903 |
| 16 | 22601 |
| 17 | 40200 |
| 18 | 71583 |
| 19 | 125184 |
| 20 | 218693 |
| 21 | 386543 |
| 22 | 670989 |
| 23 | 1164385 |
| 24 | 2021678 |
| 25 | 3462265 |
| 26 | 5930954 |
| 27 | 10189081 |
| 28 | 17266616 |
| 29 | 29654738 |
| 30 | 50912618 |
| 31 | 86017601 |
| 32 | 145327544 |
| 33 | 247555043 |
| 34 | 415598432 |
| 35 | 698015188 |
[1,2,4,8,15,29,56,103,192,364,668,1222,2233,3987, 7138,12903,22601,40200,71583,125184,218693,386543, 670989,1164385,2021678,3462265,5930954,10189081, 17266616,29654738,50912618,86017601,145327544, 247555043,415598432,698015188] |