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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 52 |
| 3 | 8460 |
| 4 | 908408 |
| 5 | 1590366402 |
| 6 | 621070325112 |
| 7 | 3815473909467500 |
| 8 | 3338879032079931702 |
| 9 | 49279739016010612438482 |
| 10 | 78078252717220869748888110 |
| 11 | 2271020746204851403136701359870 |
| 12 | 5766825640795432616276139021743234 |
| 13 | 292268929366529401852293167022121562170 |
[1,5,52,8460,908408,1590366402,621070325112, 3815473909467500,3338879032079931702, 49279739016010612438482, 78078252717220869748888110, 2271020746204851403136701359870, 5766825640795432616276139021743234, 292268929366529401852293167022121562170] |