n | a(n) |
---|---|
1 | 8 |
2 | 57 |
3 | 393 |
4 | 2719 |
5 | 18805 |
6 | 130063 |
7 | 899565 |
8 | 6221735 |
9 | 43031893 |
10 | 297624991 |
11 | 2058487997 |
12 | 14237288407 |
13 | 98470518885 |
14 | 681059680207 |
15 | 4710468607821 |
16 | 32579398179207 |
17 | 225331548533621 |
18 | 1558478965304063 |
19 | 10779035164411613 |
20 | 74551919956746807 |
[8,57,393,2719,18805,130063,899565,6221735, 43031893,297624991,2058487997,14237288407, 98470518885,681059680207,4710468607821, 32579398179207,225331548533621,1558478965304063, 10779035164411613,74551919956746807] |