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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 26 |
| 3 | 506 |
| 4 | 11482 |
| 5 | 284002 |
| 6 | 7426610 |
| 7 | 201922730 |
| 8 | 5650739930 |
| 9 | 161686253810 |
| 10 | 4708709084026 |
| 11 | 139111173397066 |
| 12 | 4159013698117618 |
| 13 | 125595645802182818 |
| 14 | 3825428523179727266 |
| 15 | 117382025506323434506 |
| 16 | 3625185567639373456090 |
| 17 | 112597953571519245194770 |
[1,2,26,506,11482,284002,7426610,201922730, 5650739930,161686253810,4708709084026, 139111173397066,4159013698117618, 125595645802182818,3825428523179727266, 117382025506323434506,3625185567639373456090, 112597953571519245194770] |