n | a(n) |
---|---|
0 | -1 |
1 | -1 |
2 | 9 |
3 | 649 |
4 | 51841 |
5 | 6825601 |
6 | 1489881601 |
7 | 511943846401 |
8 | 262183528857601 |
9 | 191138113268121601 |
10 | 191138824350351360001 |
11 | 254405870811372994560001 |
12 | 439613359905259699568640001 |
13 | 965830554503712299093852160001 |
[-1,-1,9,649,51841,6825601,1489881601, 511943846401,262183528857601,191138113268121601, 191138824350351360001,254405870811372994560001, 439613359905259699568640001, 965830554503712299093852160001] |