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| n | a(n) |
|---|---|
| 1 | 17 |
| 2 | 61 |
| 3 | 189 |
| 4 | 537 |
| 5 | 1405 |
| 6 | 3605 |
| 7 | 8909 |
| 8 | 22093 |
| 9 | 53669 |
| 10 | 131917 |
| 11 | 319837 |
| 12 | 786941 |
| 13 | 1915309 |
| 14 | 4734125 |
| 15 | 11587605 |
| 16 | 28797317 |
| 17 | 70895933 |
| 18 | 177097381 |
| 19 | 438296237 |
| 20 | 1099734997 |
| 21 | 2734106629 |
| 22 | 6885392301 |
| 23 | 17183667245 |
| 24 | 43402287421 |
| 25 | 108663538381 |
| 26 | 275107471725 |
[17,61,189,537,1405,3605,8909,22093,53669,131917, 319837,786941,1915309,4734125,11587605,28797317, 70895933,177097381,438296237,1099734997, 2734106629,6885392301,17183667245,43402287421, 108663538381,275107471725] |