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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 15 |
| 7 | 29 |
| 8 | 53 |
| 9 | 84 |
| 10 | 196 |
| 11 | 391 |
| 12 | 777 |
| 13 | 1532 |
| 14 | 3009 |
| 15 | 5711 |
| 16 | 10281 |
| 17 | 16383 |
| 18 | 38476 |
| 19 | 76951 |
| 20 | 153897 |
| 21 | 307772 |
| 22 | 615489 |
| 23 | 1230671 |
| 24 | 2460201 |
| 25 | 4916223 |
| 26 | 9821774 |
| 27 | 19582980 |
| 28 | 38935139 |
| 29 | 76947379 |
| 30 | 150209206 |
| 31 | 285751655 |
| 32 | 514138911 |
| 33 | 819473546 |
[1,2,2,4,7,15,29,53,84,196,391,777,1532,3009,5711, 10281,16383,38476,76951,153897,307772,615489, 1230671,2460201,4916223,9821774,19582980,38935139, 76947379,150209206,285751655,514138911,819473546] |