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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 17 |
| 5 | 34 |
| 6 | 69 |
| 7 | 138 |
| 8 | 277 |
| 9 | 555 |
| 10 | 1110 |
| 11 | 2220 |
| 12 | 4440 |
| 13 | 8881 |
| 14 | 17762 |
| 15 | 35525 |
| 16 | 71050 |
| 17 | 142101 |
| 18 | 284202 |
| 19 | 568405 |
| 20 | 1136810 |
| 21 | 2273621 |
| 22 | 4547242 |
| 23 | 9094485 |
| 24 | 18188970 |
| 25 | 36377941 |
| 26 | 72755882 |
| 27 | 145511765 |
| 28 | 291023530 |
| 29 | 582047061 |
| 30 | 1164094122 |
| 31 | 2328188245 |
| 32 | 4656376490 |
| 33 | 9312752981 |
[1,2,4,8,17,34,69,138,277,555,1110,2220,4440,8881, 17762,35525,71050,142101,284202,568405,1136810, 2273621,4547242,9094485,18188970,36377941, 72755882,145511765,291023530,582047061,1164094122, 2328188245,4656376490,9312752981] |