The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 294 |
| 2 | 957 |
| 3 | 3066 |
| 4 | 9633 |
| 5 | 29814 |
| 6 | 91317 |
| 7 | 277746 |
| 8 | 840873 |
| 9 | 2537934 |
| 10 | 7644477 |
| 11 | 22994826 |
| 12 | 69107313 |
| 13 | 207567654 |
| 14 | 623194437 |
| 15 | 1870566306 |
| 16 | 5613664953 |
| 17 | 16844926974 |
| 18 | 50542645197 |
| 19 | 151643664186 |
| 20 | 454962449793 |
| 21 | 1364950263894 |
| 22 | 4094976620757 |
[294,957,3066,9633,29814,91317,277746,840873, 2537934,7644477,22994826,69107313,207567654, 623194437,1870566306,5613664953,16844926974, 50542645197,151643664186,454962449793, 1364950263894,4094976620757] |