n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 61 |
4 | 381 |
5 | 2854 |
6 | 25135 |
7 | 255763 |
8 | 2961302 |
9 | 38499695 |
10 | 555711129 |
11 | 8820603268 |
12 | 152715847805 |
13 | 2864261821087 |
14 | 57852085590444 |
15 | 1251947417652537 |
16 | 28898881499645833 |
17 | 708768867850115382 |
18 | 18405673844236534531 |
19 | 504521729588383683391 |
20 | 14557420093089617559550 |
21 | 441040274672429261701475 |
[1,3,12,61,381,2854,25135,255763,2961302,38499695, 555711129,8820603268,152715847805,2864261821087, 57852085590444,1251947417652537,28898881499645833, 708768867850115382,18405673844236534531, 504521729588383683391,14557420093089617559550, 441040274672429261701475] |