n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 6 |
4 | 19 |
5 | 56 |
6 | 369 |
7 | 796 |
8 | 1146 |
9 | 1156 |
10 | 3656 |
11 | 8131 |
12 | 19056 |
13 | 40204 |
14 | 81619 |
15 | 258131 |
16 | 5624381 |
17 | 24762131 |
18 | 362789631 |
19 | 1079982019 |
20 | 11666754546 |
21 | 562726517354 |
22 | 3337114272296 |
23 | 5624644998854 |
24 | 18266544874814631 |
25 | 11537606482136410218512760694 |
[1,4,6,19,56,369,796,1146,1156,3656,8131,19056, 40204,81619,258131,5624381,24762131,362789631, 1079982019,11666754546,562726517354,3337114272296, 5624644998854,18266544874814631, 11537606482136410218512760694] |