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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 194 |
| 9 | 363 |
| 10 | 682 |
| 11 | 1288 |
| 12 | 2445 |
| 13 | 4660 |
| 14 | 8912 |
| 15 | 17092 |
| 16 | 32858 |
| 17 | 63297 |
| 18 | 122157 |
| 19 | 236147 |
| 20 | 457229 |
| 21 | 886620 |
| 22 | 1721721 |
| 23 | 3347952 |
| 24 | 6518615 |
| 25 | 12707460 |
| 26 | 24800292 |
| 27 | 48452612 |
| 28 | 94756476 |
| 29 | 185482330 |
| 30 | 363388104 |
| 31 | 712505216 |
| 32 | 1398077540 |
| 33 | 2745231341 |
[1,2,4,8,16,30,56,104,194,363,682,1288,2445,4660, 8912,17092,32858,63297,122157,236147,457229, 886620,1721721,3347952,6518615,12707460,24800292, 48452612,94756476,185482330,363388104,712505216, 1398077540,2745231341] |