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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 78 |
| 4 | 855 |
| 5 | 8736 |
| 6 | 272206 |
| 7 | 6206445 |
| 8 | 613538688 |
| 9 | 30091441770 |
| 10 | 9949962265465 |
| 11 | 995860712362464 |
| 12 | 1146808937112275178 |
| 13 | 223896318271083352427 |
| 14 | 927305041435819383020944 |
| 15 | 341298409330345173624970966 |
[2,16,78,855,8736,272206,6206445,613538688, 30091441770,9949962265465,995860712362464, 1146808937112275178,223896318271083352427, 927305041435819383020944, 341298409330345173624970966] |