n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 3 |
4 | 11 |
5 | 23 |
6 | 73 |
7 | 211 |
8 | 651 |
9 | 2371 |
10 | 7401 |
11 | 30151 |
12 | 107713 |
13 | 456409 |
14 | 1888753 |
15 | 8148451 |
16 | 37754791 |
17 | 170459451 |
18 | 842310755 |
19 | 4096595827 |
20 | 20984546901 |
[1,3,3,11,23,73,211,651,2371,7401,30151,107713, 456409,1888753,8148451,37754791,170459451, 842310755,4096595827,20984546901] |