n | a(n) |
---|---|
1 | 6 |
2 | 8 |
3 | 21 |
4 | 137 |
5 | 759 |
6 | 4835 |
7 | 31591 |
8 | 216460 |
9 | 1516047 |
10 | 10864196 |
11 | 79437844 |
12 | 590119523 |
13 | 4453596825 |
14 | 34028591249 |
15 | 263304258843 |
16 | 2058154419091 |
17 | 16252842542358 |
18 | 129434331448080 |
19 | 1039407597863960 |
20 | 8405943746368118 |
21 | 68447035142972923 |
[6,8,21,137,759,4835,31591,216460,1516047, 10864196,79437844,590119523,4453596825, 34028591249,263304258843,2058154419091, 16252842542358,129434331448080,1039407597863960, 8405943746368118,68447035142972923] |