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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 18 |
| 3 | 906 |
| 4 | 5466 |
| 5 | 257302 |
| 6 | 825366 |
| 7 | 1880082 |
| 8 | 6637546 |
| 9 | 6765826 |
| 10 | 8936722 |
| 11 | 9483706 |
| 12 | 34087054 |
| 13 | 51914026 |
| 14 | 54806454 |
| 15 | 57663334 |
| 16 | 57819882 |
| 17 | 67372378 |
| 18 | 91835206 |
| 19 | 98963734 |
| 20 | 102985926 |
| 21 | 117697186 |
| 22 | 134457346 |
| 23 | 143888806 |
| 24 | 172530646 |
| 25 | 206623266 |
[6,18,906,5466,257302,825366,1880082,6637546, 6765826,8936722,9483706,34087054,51914026, 54806454,57663334,57819882,67372378,91835206, 98963734,102985926,117697186,134457346,143888806, 172530646,206623266] |