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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 58 |
| 7 | 106 |
| 8 | 200 |
| 9 | 360 |
| 10 | 668 |
| 11 | 1190 |
| 12 | 2182 |
| 13 | 3858 |
| 14 | 7012 |
| 15 | 12328 |
| 16 | 22256 |
| 17 | 38958 |
| 18 | 69962 |
| 19 | 122042 |
| 20 | 218248 |
| 21 | 379656 |
| 22 | 676636 |
| 23 | 1174390 |
| 24 | 2087222 |
| 25 | 3615906 |
| 26 | 6411716 |
| 27 | 11090504 |
| 28 | 19627984 |
| 29 | 33907134 |
| 30 | 59912410 |
| 31 | 103385482 |
| 32 | 182429768 |
[1,2,4,8,16,30,58,106,200,360,668,1190,2182,3858, 7012,12328,22256,38958,69962,122042,218248,379656, 676636,1174390,2087222,3615906,6411716,11090504, 19627984,33907134,59912410,103385482,182429768] |