n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 7 |
3 | 17 |
4 | 47 |
5 | 148 |
6 | 518 |
7 | 1977 |
8 | 8138 |
9 | 35879 |
10 | 168500 |
11 | 838944 |
12 | 4409957 |
13 | 24385913 |
14 | 141412615 |
15 | 857611641 |
16 | 5426144191 |
17 | 35739397738 |
18 | 244573978098 |
19 | 1735854397529 |
20 | 12757309001222 |
21 | 96941738970957 |
22 | 760649367654460 |
23 | 6155205917196408 |
24 | 51308394497243469 |
25 | 440110582561558831 |
[1,3,7,17,47,148,518,1977,8138,35879,168500, 838944,4409957,24385913,141412615,857611641, 5426144191,35739397738,244573978098,1735854397529, 12757309001222,96941738970957,760649367654460, 6155205917196408,51308394497243469, 440110582561558831] |