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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 22 |
| 7 | 42 |
| 8 | 76 |
| 9 | 142 |
| 10 | 262 |
| 11 | 488 |
| 12 | 902 |
| 13 | 1674 |
| 14 | 3100 |
| 15 | 5750 |
| 16 | 10654 |
| 17 | 19752 |
| 18 | 36606 |
| 19 | 67858 |
| 20 | 125772 |
| 21 | 233134 |
| 22 | 432118 |
| 23 | 800968 |
| 24 | 1484630 |
| 25 | 2751866 |
| 26 | 5100732 |
| 27 | 9454534 |
| 28 | 17524526 |
| 29 | 32482792 |
| 30 | 60208782 |
| 31 | 111600642 |
| 32 | 206858476 |
| 33 | 383424702 |
| 34 | 710700742 |
| 35 | 1317326728 |
| 36 | 2441744422 |
[0,1,2,4,6,12,22,42,76,142,262,488,902,1674,3100, 5750,10654,19752,36606,67858,125772,233134,432118, 800968,1484630,2751866,5100732,9454534,17524526, 32482792,60208782,111600642,206858476,383424702, 710700742,1317326728,2441744422] |