n | a(n) |
---|---|
2 | 1 |
3 | 21 |
4 | 546 |
5 | 13546 |
6 | 339171 |
7 | 8476671 |
8 | 211929796 |
9 | 5298179796 |
10 | 132454820421 |
11 | 3311368882921 |
12 | 82784230211046 |
13 | 2069605714586046 |
14 | 51740143068101671 |
15 | 1293503575685289171 |
16 | 32337589397218492296 |
17 | 808439734905030992296 |
[1,21,546,13546,339171,8476671,211929796, 5298179796,132454820421,3311368882921, 82784230211046,2069605714586046,51740143068101671, 1293503575685289171,32337589397218492296, 808439734905030992296] |