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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 14 |
| 5 | 32 |
| 6 | 70 |
| 7 | 150 |
| 8 | 316 |
| 9 | 658 |
| 10 | 1358 |
| 11 | 2784 |
| 12 | 5678 |
| 13 | 11534 |
| 14 | 23356 |
| 15 | 47178 |
| 16 | 95110 |
| 17 | 191440 |
| 18 | 384854 |
| 19 | 772902 |
| 20 | 1550972 |
| 21 | 3110306 |
| 22 | 6234142 |
| 23 | 12490176 |
| 24 | 25015774 |
| 25 | 50088862 |
| 26 | 100270460 |
| 27 | 200690970 |
| 28 | 401624726 |
| 29 | 803642288 |
| 30 | 1607920198 |
| 31 | 3216868854 |
| 32 | 6435401788 |
| 33 | 12873496114 |
| 34 | 25751348846 |
[1,2,6,14,32,70,150,316,658,1358,2784,5678,11534, 23356,47178,95110,191440,384854,772902,1550972, 3110306,6234142,12490176,25015774,50088862, 100270460,200690970,401624726,803642288, 1607920198,3216868854,6435401788,12873496114, 25751348846] |