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| n | a(n) |
|---|---|
| 1 | 231 |
| 2 | 537 |
| 3 | 1099 |
| 4 | 2099 |
| 5 | 3997 |
| 6 | 7379 |
| 7 | 13747 |
| 8 | 25335 |
| 9 | 47093 |
| 10 | 87513 |
| 11 | 163699 |
| 12 | 307721 |
| 13 | 581223 |
| 14 | 1105495 |
| 15 | 2109715 |
| 16 | 4055319 |
| 17 | 7812709 |
| 18 | 15150193 |
| 19 | 29420803 |
| 20 | 57448799 |
| 21 | 112272663 |
| 22 | 220389539 |
| 23 | 432816337 |
| 24 | 852950837 |
| 25 | 1681246791 |
| 26 | 3322791067 |
[231,537,1099,2099,3997,7379,13747,25335,47093, 87513,163699,307721,581223,1105495,2109715, 4055319,7812709,15150193,29420803,57448799, 112272663,220389539,432816337,852950837, 1681246791,3322791067] |