n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 27 |
6 | 82 |
7 | 328 |
8 | 1313 |
9 | 6565 |
10 | 32826 |
11 | 196956 |
12 | 1181737 |
13 | 8272159 |
14 | 57905114 |
15 | 463240912 |
16 | 3705927297 |
17 | 33353345673 |
18 | 300180111058 |
19 | 3001801110580 |
20 | 30018011105801 |
21 | 330198122163811 |
22 | 3632179343801922 |
23 | 43586152125623064 |
[1,2,4,9,27,82,328,1313,6565,32826,196956,1181737, 8272159,57905114,463240912,3705927297,33353345673, 300180111058,3001801110580,30018011105801, 330198122163811,3632179343801922, 43586152125623064] |