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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 14 |
| 6 | 27 |
| 7 | 54 |
| 8 | 107 |
| 9 | 213 |
| 10 | 425 |
| 11 | 849 |
| 12 | 1697 |
| 13 | 3394 |
| 14 | 6787 |
| 15 | 13573 |
| 16 | 27146 |
| 17 | 54292 |
| 18 | 108584 |
| 19 | 217168 |
| 20 | 434335 |
| 21 | 868669 |
| 22 | 1737338 |
| 23 | 3474676 |
| 24 | 6949351 |
| 25 | 13898701 |
| 26 | 27797402 |
| 27 | 55594804 |
| 28 | 111189607 |
| 29 | 222379213 |
| 30 | 444758426 |
| 31 | 889516852 |
| 32 | 1779033704 |
| 33 | 3558067408 |
[1,2,4,7,14,27,54,107,213,425,849,1697,3394,6787, 13573,27146,54292,108584,217168,434335,868669, 1737338,3474676,6949351,13898701,27797402, 55594804,111189607,222379213,444758426,889516852, 1779033704,3558067408] |