n | a(n) |
---|---|
1 | 81 |
2 | 470 |
3 | 2180 |
4 | 9623 |
5 | 42669 |
6 | 192393 |
7 | 876277 |
8 | 4010555 |
9 | 18395493 |
10 | 84458827 |
11 | 387945181 |
12 | 1782308819 |
13 | 8189083701 |
14 | 37627550715 |
15 | 172896033837 |
16 | 794452690915 |
17 | 3650504500581 |
18 | 16774075855627 |
19 | 77076986789213 |
20 | 354169411790451 |
[81,470,2180,9623,42669,192393,876277,4010555, 18395493,84458827,387945181,1782308819,8189083701, 37627550715,172896033837,794452690915, 3650504500581,16774075855627,77076986789213, 354169411790451] |