n | a(n) |
---|---|
1 | -1 |
2 | 1 |
3 | 9 |
4 | 61 |
5 | 587 |
6 | 7575 |
7 | 117485 |
8 | 2057365 |
9 | 39314175 |
10 | 802816213 |
11 | 17275712297 |
12 | 387886408443 |
13 | 9020881956707 |
14 | 216101556811603 |
15 | 5309497149531957 |
16 | 133334756362738885 |
17 | 3412887111988377575 |
18 | 88838285028658754625 |
19 | 2347236720247792005665 |
20 | 62849602943515066525633 |
[-1,1,9,61,587,7575,117485,2057365,39314175, 802816213,17275712297,387886408443,9020881956707, 216101556811603,5309497149531957, 133334756362738885,3412887111988377575, 88838285028658754625,2347236720247792005665, 62849602943515066525633] |