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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 10 |
| 5 | 23 |
| 6 | 47 |
| 7 | 103 |
| 8 | 209 |
| 9 | 449 |
| 10 | 908 |
| 11 | 1909 |
| 12 | 3864 |
| 13 | 8011 |
| 14 | 16165 |
| 15 | 33244 |
| 16 | 66933 |
| 17 | 136628 |
| 18 | 274876 |
| 19 | 558107 |
| 20 | 1121160 |
| 21 | 2268526 |
| 22 | 4552291 |
| 23 | 9183569 |
| 24 | 18417449 |
| 25 | 37073504 |
| 26 | 74300048 |
| 27 | 149334422 |
| 28 | 299134695 |
| 29 | 600481001 |
| 30 | 1202436958 |
| 31 | 2411536369 |
| 32 | 4827532935 |
| 33 | 9675363921 |
| 34 | 19364235775 |
[1,1,2,5,10,23,47,103,209,449,908,1909,3864,8011, 16165,33244,66933,136628,274876,558107,1121160, 2268526,4552291,9183569,18417449,37073504, 74300048,149334422,299134695,600481001,1202436958, 2411536369,4827532935,9675363921,19364235775] |