n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 15 |
4 | 75 |
5 | 289 |
6 | 1445 |
7 | 6095 |
8 | 30475 |
9 | 135117 |
10 | 675585 |
11 | 3087987 |
12 | 15439935 |
13 | 72008619 |
14 | 360043095 |
15 | 1703029437 |
16 | 8515147185 |
17 | 40694381623 |
18 | 203471908115 |
19 | 979988489573 |
20 | 4899942447865 |
21 | 23742016308033 |
22 | 118710081540165 |
23 | 577930415357795 |
24 | 2889652076788975 |
25 | 14121788791089079 |
26 | 70608943955445395 |
27 | 346141784385418635 |
[1,1,5,15,75,289,1445,6095,30475,135117,675585, 3087987,15439935,72008619,360043095,1703029437, 8515147185,40694381623,203471908115,979988489573, 4899942447865,23742016308033,118710081540165, 577930415357795,2889652076788975, 14121788791089079,70608943955445395, 346141784385418635] |