n | a(n) |
---|---|
1 | 1 |
2 | 11 |
3 | 71 |
4 | 356 |
5 | 1866 |
6 | 10476 |
7 | 57186 |
8 | 308621 |
9 | 1682031 |
10 | 9170291 |
11 | 49879401 |
12 | 271409736 |
13 | 1477549796 |
14 | 8042157456 |
15 | 43769353716 |
16 | 238229560201 |
17 | 1296650911661 |
18 | 7057377605971 |
19 | 38411803629131 |
20 | 209067989511516 |
[1,11,71,356,1866,10476,57186,308621,1682031, 9170291,49879401,271409736,1477549796,8042157456, 43769353716,238229560201,1296650911661, 7057377605971,38411803629131,209067989511516] |