n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 47 |
5 | 227 |
6 | 1215 |
7 | 7107 |
8 | 44959 |
9 | 305091 |
10 | 2206399 |
11 | 16913987 |
12 | 136823263 |
13 | 1163490499 |
14 | 10366252031 |
15 | 96491364675 |
16 | 935976996127 |
17 | 9440144423875 |
18 | 98800604237119 |
19 | 1071092025420867 |
20 | 12008090971866207 |
21 | 139014305916844739 |
22 | 1659578039401022079 |
23 | 20405708646650507075 |
[1,1,3,11,47,227,1215,7107,44959,305091,2206399, 16913987,136823263,1163490499,10366252031, 96491364675,935976996127,9440144423875, 98800604237119,1071092025420867,12008090971866207, 139014305916844739,1659578039401022079, 20405708646650507075] |