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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 9 |
| 3 | 25 |
| 4 | 69 |
| 5 | 207 |
| 6 | 603 |
| 7 | 1741 |
| 8 | 5223 |
| 9 | 15445 |
| 10 | 45423 |
| 11 | 133083 |
| 12 | 388931 |
| 13 | 1166793 |
| 14 | 3468159 |
| 15 | 10273893 |
| 16 | 30362903 |
| 17 | 89585413 |
| 18 | 268756239 |
| 19 | 801503303 |
| 20 | 2384949771 |
| 21 | 7085216455 |
| 22 | 21024282907 |
| 23 | 62328987385 |
| 24 | 184644664807 |
| 25 | 553933994421 |
| 26 | 1654527949377 |
[3,9,25,69,207,603,1741,5223,15445,45423,133083, 388931,1166793,3468159,10273893,30362903,89585413, 268756239,801503303,2384949771,7085216455, 21024282907,62328987385,184644664807,553933994421, 1654527949377] |