n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 22 |
6 | 88 |
7 | 368 |
8 | 1585 |
9 | 6984 |
10 | 31348 |
11 | 142868 |
12 | 659434 |
13 | 3076432 |
14 | 14483556 |
15 | 68723800 |
16 | 328322903 |
17 | 1577959294 |
18 | 7624155960 |
19 | 37011662868 |
20 | 180436535308 |
21 | 883016392536 |
22 | 4336268255420 |
23 | 21361517691248 |
24 | 105535705919116 |
[1,1,2,6,22,88,368,1585,6984,31348,142868,659434, 3076432,14483556,68723800,328322903,1577959294, 7624155960,37011662868,180436535308,883016392536, 4336268255420,21361517691248,105535705919116] |