n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 30 |
4 | 114 |
5 | 432 |
6 | 1638 |
7 | 6210 |
8 | 23544 |
9 | 89262 |
10 | 338418 |
11 | 1283040 |
12 | 4864374 |
13 | 18442242 |
14 | 69919848 |
15 | 265086270 |
16 | 1005018354 |
17 | 3810313872 |
18 | 14445996678 |
19 | 54768931650 |
20 | 207644784984 |
21 | 787241149902 |
22 | 2984657804658 |
23 | 11315696863680 |
24 | 42901064005014 |
[1,2,8,30,114,432,1638,6210,23544,89262,338418, 1283040,4864374,18442242,69919848,265086270, 1005018354,3810313872,14445996678,54768931650, 207644784984,787241149902,2984657804658, 11315696863680,42901064005014] |