n | a(n) |
---|---|
2 | 1 |
3 | 9 |
4 | 58 |
5 | 329 |
6 | 1753 |
7 | 9020 |
8 | 45442 |
9 | 225860 |
10 | 1112543 |
11 | 5446607 |
12 | 26550968 |
13 | 129042976 |
14 | 625860205 |
15 | 3031021096 |
16 | 14664729519 |
17 | 70906318405 |
18 | 342717456708 |
19 | 1656208470644 |
20 | 8003645557573 |
21 | 38681730323747 |
22 | 186985728069661 |
23 | 904119336235884 |
[1,9,58,329,1753,9020,45442,225860,1112543, 5446607,26550968,129042976,625860205,3031021096, 14664729519,70906318405,342717456708, 1656208470644,8003645557573,38681730323747, 186985728069661,904119336235884] |