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| n | a(n) |
|---|---|
| 1 | 39 |
| 2 | 58 |
| 3 | 73 |
| 4 | 108 |
| 5 | 180 |
| 6 | 324 |
| 7 | 612 |
| 8 | 1188 |
| 9 | 2340 |
| 10 | 4644 |
| 11 | 9252 |
| 12 | 18468 |
| 13 | 36900 |
| 14 | 73764 |
| 15 | 147492 |
| 16 | 294948 |
| 17 | 589860 |
| 18 | 1179684 |
| 19 | 2359332 |
| 20 | 4718628 |
| 21 | 9437220 |
| 22 | 18874404 |
| 23 | 37748772 |
| 24 | 75497508 |
| 25 | 150994980 |
| 26 | 301989924 |
| 27 | 603979812 |
| 28 | 1207959588 |
| 29 | 2415919140 |
| 30 | 4831838244 |
[39,58,73,108,180,324,612,1188,2340,4644,9252, 18468,36900,73764,147492,294948,589860,1179684, 2359332,4718628,9437220,18874404,37748772, 75497508,150994980,301989924,603979812,1207959588, 2415919140,4831838244] |