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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 7 |
| 6 | 15 |
| 7 | 33 |
| 8 | 77 |
| 9 | 181 |
| 10 | 443 |
| 11 | 1113 |
| 12 | 2837 |
| 13 | 7283 |
| 14 | 18909 |
| 15 | 49635 |
| 16 | 131427 |
| 17 | 350419 |
| 18 | 940417 |
| 19 | 2538857 |
| 20 | 6890577 |
| 21 | 18790165 |
| 22 | 51462893 |
| 23 | 141509487 |
| 24 | 390530601 |
| 25 | 1081369087 |
| 26 | 3003537529 |
| 27 | 8366306613 |
| 28 | 23366125605 |
| 29 | 65420219243 |
| 30 | 183585473369 |
| 31 | 516298786843 |
| 32 | 1454928750641 |
[1,1,1,1,3,7,15,33,77,181,443,1113,2837,7283, 18909,49635,131427,350419,940417,2538857,6890577, 18790165,51462893,141509487,390530601,1081369087, 3003537529,8366306613,23366125605,65420219243, 183585473369,516298786843,1454928750641] |