n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 77 |
5 | 521 |
6 | 4237 |
7 | 38879 |
8 | 402537 |
9 | 4605697 |
10 | 57796601 |
11 | 787755255 |
12 | 11583272461 |
13 | 182651526513 |
14 | 3072748617317 |
15 | 54914056549231 |
16 | 1038486405418449 |
17 | 20713226786502529 |
18 | 434426374539131761 |
19 | 9555736871169618407 |
20 | 219912659890141260661 |
21 | 5283756963089094382705 |
[1,1,3,13,77,521,4237,38879,402537,4605697, 57796601,787755255,11583272461,182651526513, 3072748617317,54914056549231,1038486405418449, 20713226786502529,434426374539131761, 9555736871169618407,219912659890141260661, 5283756963089094382705] |