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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 37 |
| 3 | 153 |
| 4 | 475 |
| 5 | 1101 |
| 6 | 2591 |
| 7 | 6055 |
| 8 | 14199 |
| 9 | 33289 |
| 10 | 78119 |
| 11 | 183447 |
| 12 | 430889 |
| 13 | 1011945 |
| 14 | 2376423 |
| 15 | 5580971 |
| 16 | 13107163 |
| 17 | 30782605 |
| 18 | 72293525 |
| 19 | 169783471 |
| 20 | 398743229 |
| 21 | 936465399 |
| 22 | 2199327501 |
| 23 | 5165208441 |
| 24 | 12130703729 |
| 25 | 28489466517 |
| 26 | 66908707817 |
[7,37,153,475,1101,2591,6055,14199,33289,78119, 183447,430889,1011945,2376423,5580971,13107163, 30782605,72293525,169783471,398743229,936465399, 2199327501,5165208441,12130703729,28489466517, 66908707817] |