n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 63 |
3 | 609 |
4 | 6349 |
5 | 70693 |
6 | 835051 |
7 | 10408335 |
8 | 136290371 |
9 | 1867933865 |
10 | 26712000161 |
11 | 397487932457 |
12 | 6140285212915 |
13 | 98264596199651 |
14 | 1626101133819855 |
15 | 27779382241071769 |
16 | 489188555650420493 |
17 | 8867962363328434205 |
18 | 165284825277198034611 |
19 | 3163858565498874214559 |
20 | 62133992974174011252635 |
[1,7,63,609,6349,70693,835051,10408335,136290371, 1867933865,26712000161,397487932457,6140285212915, 98264596199651,1626101133819855,27779382241071769, 489188555650420493,8867962363328434205, 165284825277198034611,3163858565498874214559, 62133992974174011252635] |