n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 93 |
4 | 641 |
5 | 4719 |
6 | 36335 |
7 | 289017 |
8 | 2356321 |
9 | 19586283 |
10 | 165364799 |
11 | 1414193205 |
12 | 12224831937 |
13 | 106645825047 |
14 | 937685498271 |
15 | 8301129707121 |
16 | 73929906605249 |
17 | 661919872559763 |
18 | 5954449287679919 |
19 | 53791836313371405 |
20 | 487807821246726273 |
21 | 4438980860105747967 |
22 | 40521481906592540175 |
[1,3,15,93,641,4719,36335,289017,2356321,19586283, 165364799,1414193205,12224831937,106645825047, 937685498271,8301129707121,73929906605249, 661919872559763,5954449287679919, 53791836313371405,487807821246726273, 4438980860105747967,40521481906592540175] |