n | a(n) |
---|---|
1 | 20 |
2 | 1071 |
3 | 26320 |
4 | 431739 |
5 | 5494896 |
6 | 58677420 |
7 | 550712668 |
8 | 4681144391 |
9 | 36786186216 |
10 | 271221867098 |
11 | 1896796135920 |
12 | 12688048319278 |
13 | 81709791432384 |
14 | 509222462694582 |
15 | 3083998029716868 |
16 | 18213177504318335 |
17 | 105186858991413976 |
18 | 595499805083872458 |
19 | 3311524095424508480 |
[20,1071,26320,431739,5494896,58677420,550712668, 4681144391,36786186216,271221867098,1896796135920, 12688048319278,81709791432384,509222462694582, 3083998029716868,18213177504318335, 105186858991413976,595499805083872458, 3311524095424508480] |