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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 5 |
| 6 | 10 |
| 7 | 20 |
| 8 | 37 |
| 9 | 74 |
| 10 | 148 |
| 11 | 293 |
| 12 | 586 |
| 13 | 1172 |
| 14 | 2341 |
| 15 | 4682 |
| 16 | 9364 |
| 17 | 18725 |
| 18 | 37450 |
| 19 | 74900 |
| 20 | 149797 |
| 21 | 299594 |
| 22 | 599188 |
| 23 | 1198373 |
| 24 | 2396746 |
| 25 | 4793492 |
| 26 | 9586981 |
| 27 | 19173962 |
| 28 | 38347924 |
| 29 | 76695845 |
| 30 | 153391690 |
| 31 | 306783380 |
| 32 | 613566757 |
| 33 | 1227133514 |
| 34 | 2454267028 |
[1,2,1,2,4,5,10,20,37,74,148,293,586,1172,2341, 4682,9364,18725,37450,74900,149797,299594,599188, 1198373,2396746,4793492,9586981,19173962,38347924, 76695845,153391690,306783380,613566757,1227133514, 2454267028] |