n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 18 |
4 | 58 |
5 | 202 |
6 | 762 |
7 | 3114 |
8 | 13754 |
9 | 65386 |
10 | 332922 |
11 | 1806506 |
12 | 10398266 |
13 | 63226858 |
14 | 404640250 |
15 | 2716838186 |
16 | 19083233210 |
17 | 139874994282 |
18 | 1067462826874 |
19 | 8464760754602 |
20 | 69620304280890 |
21 | 592925117961450 |
22 | 5220996124450042 |
23 | 47467755352580650 |
24 | 445027186867923642 |
[1,2,6,18,58,202,762,3114,13754,65386,332922, 1806506,10398266,63226858,404640250,2716838186, 19083233210,139874994282,1067462826874, 8464760754602,69620304280890,592925117961450, 5220996124450042,47467755352580650, 445027186867923642] |