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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 106 |
| 8 | 204 |
| 9 | 396 |
| 10 | 768 |
| 11 | 1488 |
| 12 | 2886 |
| 13 | 5610 |
| 14 | 10926 |
| 15 | 21306 |
| 16 | 41580 |
| 17 | 81204 |
| 18 | 158712 |
| 19 | 310444 |
| 20 | 607672 |
| 21 | 1190240 |
| 22 | 2332688 |
| 23 | 4574284 |
| 24 | 8974808 |
| 25 | 17617864 |
| 26 | 34601670 |
| 27 | 67990286 |
| 28 | 133657768 |
| 29 | 262864296 |
| 30 | 517192398 |
| 31 | 1018003230 |
| 32 | 2004547212 |
| 33 | 3948639264 |
[1,2,4,8,16,30,56,106,204,396,768,1488,2886,5610, 10926,21306,41580,81204,158712,310444,607672, 1190240,2332688,4574284,8974808,17617864,34601670, 67990286,133657768,262864296,517192398,1018003230, 2004547212,3948639264] |