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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 105 |
| 3 | 126 |
| 4 | 454 |
| 5 | 1729 |
| 6 | 5408 |
| 7 | 17054 |
| 8 | 58109 |
| 9 | 187782 |
| 10 | 603230 |
| 11 | 1995190 |
| 12 | 6520429 |
| 13 | 21144350 |
| 14 | 69245859 |
| 15 | 226468041 |
| 16 | 737659360 |
| 17 | 2409323948 |
| 18 | 7873600196 |
| 19 | 25689526682 |
| 20 | 83865350045 |
| 21 | 273916886308 |
| 22 | 894189316717 |
| 23 | 2919142354022 |
| 24 | 9531957692014 |
[13,105,126,454,1729,5408,17054,58109,187782, 603230,1995190,6520429,21144350,69245859, 226468041,737659360,2409323948,7873600196, 25689526682,83865350045,273916886308,894189316717, 2919142354022,9531957692014] |