n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 17 |
5 | 51 |
6 | 205 |
7 | 1079 |
8 | 6993 |
9 | 53227 |
10 | 462341 |
11 | 4500255 |
12 | 48454969 |
13 | 571411283 |
14 | 7321388397 |
15 | 101249656711 |
16 | 1502852293025 |
17 | 23827244817339 |
18 | 401839065437653 |
19 | 7182224591785967 |
20 | 135607710526966281 |
21 | 2696935204638786595 |
22 | 56349204870460046909 |
23 | 1234002202313888987223 |
[0,1,3,7,17,51,205,1079,6993,53227,462341,4500255, 48454969,571411283,7321388397,101249656711, 1502852293025,23827244817339,401839065437653, 7182224591785967,135607710526966281, 2696935204638786595,56349204870460046909, 1234002202313888987223] |