n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 51 |
4 | 360 |
5 | 2521 |
6 | 17647 |
7 | 123531 |
8 | 864720 |
9 | 6053041 |
10 | 42371287 |
11 | 296599011 |
12 | 2076193080 |
13 | 14533351561 |
14 | 101733460927 |
15 | 712134226491 |
16 | 4984939585440 |
17 | 34894577098081 |
18 | 244262039686567 |
19 | 1709834277805971 |
[1,7,51,360,2521,17647,123531,864720,6053041, 42371287,296599011,2076193080,14533351561, 101733460927,712134226491,4984939585440, 34894577098081,244262039686567,1709834277805971] |