n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 3 |
5 | 19 |
6 | 213 |
7 | 3761 |
8 | 96373 |
9 | 3377487 |
10 | 154874569 |
11 | 8980530625 |
12 | 641008120761 |
13 | 55110586506119 |
14 | 5606337607922197 |
15 | 664893010179107529 |
16 | 90785224148218811149 |
17 | 14119839142088335522351 |
18 | 2478547355267024762146257 |
[1,1,3,19,213,3761,96373,3377487,154874569, 8980530625,641008120761,55110586506119, 5606337607922197,664893010179107529, 90785224148218811149,14119839142088335522351, 2478547355267024762146257] |