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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 14 |
| 5 | 26 |
| 6 | 49 |
| 7 | 93 |
| 8 | 176 |
| 9 | 333 |
| 10 | 630 |
| 11 | 1192 |
| 12 | 2255 |
| 13 | 4267 |
| 14 | 8073 |
| 15 | 15274 |
| 16 | 28900 |
| 17 | 54679 |
| 18 | 103455 |
| 19 | 195741 |
| 20 | 370348 |
| 21 | 700713 |
| 22 | 1325774 |
| 23 | 2508412 |
| 24 | 4746007 |
| 25 | 8979617 |
| 26 | 16989761 |
| 27 | 32145244 |
| 28 | 60819967 |
| 29 | 115073582 |
| 30 | 217723390 |
| 31 | 411940547 |
| 32 | 779406450 |
| 33 | 1474665262 |
| 34 | 2790120139 |
[1,2,4,7,14,26,49,93,176,333,630,1192,2255,4267, 8073,15274,28900,54679,103455,195741,370348, 700713,1325774,2508412,4746007,8979617,16989761, 32145244,60819967,115073582,217723390,411940547, 779406450,1474665262,2790120139] |