n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 2 |
4 | 9 |
5 | 9 |
6 | 15 |
7 | 84 |
8 | 256 |
9 | 278 |
10 | 819 |
11 | 1734 |
12 | 6500 |
13 | 10004 |
14 | 20116 |
15 | 26612 |
16 | 31762827 |
17 | 181599789 |
18 | 981641086 |
19 | 1698644383 |
20 | 1987894743 |
21 | 5557385559 |
22 | 11998593788 |
23 | 12646182115 |
24 | 70932754473 |
25 | 106473857370 |
26 | 527311590750 |
[1,2,2,9,9,15,84,256,278,819,1734,6500,10004, 20116,26612,31762827,181599789,981641086, 1698644383,1987894743,5557385559,11998593788, 12646182115,70932754473,106473857370,527311590750] |