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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 7 |
| 5 | 13 |
| 6 | 23 |
| 7 | 43 |
| 8 | 85 |
| 9 | 170 |
| 10 | 320 |
| 11 | 628 |
| 12 | 1224 |
| 13 | 2446 |
| 14 | 4869 |
| 15 | 9640 |
| 16 | 19119 |
| 17 | 37969 |
| 18 | 75258 |
| 19 | 149530 |
| 20 | 297562 |
| 21 | 592033 |
| 22 | 1178763 |
| 23 | 2348334 |
| 24 | 4679406 |
| 25 | 9326904 |
| 26 | 18596999 |
| 27 | 37086110 |
| 28 | 73967842 |
| 29 | 147557811 |
| 30 | 294406743 |
| 31 | 587477780 |
| 32 | 1172420818 |
| 33 | 2340067092 |
| 34 | 4671002564 |
[1,2,3,4,7,13,23,43,85,170,320,628,1224,2446,4869, 9640,19119,37969,75258,149530,297562,592033, 1178763,2348334,4679406,9326904,18596999,37086110, 73967842,147557811,294406743,587477780,1172420818, 2340067092,4671002564] |