n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 6 |
4 | 2 |
5 | 18 |
6 | 34 |
7 | 2 |
8 | 578 |
9 | 1154 |
10 | 2 |
11 | 665858 |
12 | 1331714 |
13 | 2 |
14 | 886731088898 |
15 | 1773462177794 |
16 | 2 |
17 | 1572584048032918633353218 |
18 | 3145168096065837266706434 |
19 | 2 |
20 | 4946041176255201878775086487573351061418968498178 |
21 | 9892082352510403757550172975146702122837936996354 |
[2,4,6,2,18,34,2,578,1154,2,665858,1331714,2, 886731088898,1773462177794,2, 1572584048032918633353218, 3145168096065837266706434,2, 4946041176255201878775086487573351061418968498178, 9892082352510403757550172975146702122837936996354] |