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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 10 |
| 6 | 20 |
| 7 | 40 |
| 8 | 81 |
| 9 | 165 |
| 10 | 326 |
| 11 | 652 |
| 12 | 1305 |
| 13 | 2613 |
| 14 | 5231 |
| 15 | 10472 |
| 16 | 20964 |
| 17 | 41969 |
| 18 | 83858 |
| 19 | 167716 |
| 20 | 335433 |
| 21 | 670869 |
| 22 | 1341743 |
| 23 | 2683496 |
| 24 | 5367012 |
| 25 | 10734065 |
| 26 | 21468214 |
| 27 | 42936589 |
| 28 | 85873504 |
| 29 | 171747661 |
| 30 | 343496630 |
| 31 | 686995878 |
| 32 | 1373996997 |
| 33 | 2748004486 |
| 34 | 5495988009 |
| 35 | 10991976018 |
| 36 | 21983952037 |
| 37 | 43967904077 |
[1,1,2,5,10,20,40,81,165,326,652,1305,2613,5231, 10472,20964,41969,83858,167716,335433,670869, 1341743,2683496,5367012,10734065,21468214, 42936589,85873504,171747661,343496630,686995878, 1373996997,2748004486,5495988009,10991976018, 21983952037,43967904077] |