n | a(n) |
---|---|
1 | 2 |
2 | 9 |
3 | 50 |
4 | 285 |
5 | 1129 |
6 | 4791 |
7 | 17219 |
8 | 63640 |
9 | 182143 |
10 | 598332 |
11 | 1622713 |
12 | 4807733 |
13 | 12097755 |
14 | 34041279 |
15 | 81727927 |
16 | 221397591 |
17 | 519077550 |
18 | 1343959858 |
19 | 3089610203 |
20 | 7776466084 |
21 | 17320256047 |
22 | 42922087359 |
23 | 94826300116 |
24 | 228462204560 |
[2,9,50,285,1129,4791,17219,63640,182143,598332, 1622713,4807733,12097755,34041279,81727927, 221397591,519077550,1343959858,3089610203, 7776466084,17320256047,42922087359,94826300116, 228462204560] |