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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 13 |
| 6 | 33 |
| 7 | 63 |
| 8 | 126 |
| 9 | 187 |
| 10 | 442 |
| 11 | 869 |
| 12 | 1753 |
| 13 | 3506 |
| 14 | 5257 |
| 15 | 12269 |
| 16 | 24538 |
| 17 | 36805 |
| 18 | 85876 |
| 19 | 171755 |
| 20 | 343507 |
| 21 | 687019 |
| 22 | 1374038 |
| 23 | 2061055 |
| 24 | 4809126 |
| 25 | 9618252 |
| 26 | 14427378 |
| 27 | 28854567 |
| 28 | 62518388 |
| 29 | 125036840 |
| 30 | 250073665 |
| 31 | 500147342 |
| 32 | 1000294687 |
| 33 | 2000589376 |
[2,3,5,10,13,33,63,126,187,442,869,1753,3506,5257, 12269,24538,36805,85876,171755,343507,687019, 1374038,2061055,4809126,9618252,14427378,28854567, 62518388,125036840,250073665,500147342,1000294687, 2000589376] |