n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 13 |
3 | 55 |
4 | 265 |
5 | 1205 |
6 | 5941 |
7 | 27961 |
8 | 138745 |
9 | 665103 |
10 | 3310317 |
11 | 16041609 |
12 | 79986407 |
13 | 390348973 |
14 | 1948432333 |
15 | 9555608427 |
16 | 47726348731 |
17 | 234904326795 |
18 | 1173682547443 |
19 | 5792382066861 |
20 | 28947965469611 |
21 | 143162807683029 |
22 | 715579210092605 |
23 | 3544738294992175 |
24 | 17719691563476451 |
25 | 87893464730984225 |
[1,3,13,55,265,1205,5941,27961,138745,665103, 3310317,16041609,79986407,390348973,1948432333, 9555608427,47726348731,234904326795,1173682547443, 5792382066861,28947965469611,143162807683029, 715579210092605,3544738294992175, 17719691563476451,87893464730984225] |