n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 65 |
6 | 326 |
7 | 1947 |
8 | 13410 |
9 | 104181 |
10 | 900214 |
11 | 8566655 |
12 | 89055224 |
13 | 1004141647 |
14 | 12204369138 |
15 | 159036267519 |
16 | 2211764983734 |
17 | 32696763676521 |
18 | 511987792322430 |
19 | 8465194670035767 |
20 | 147370831072230860 |
21 | 2694506417687396995 |
22 | 51622643862824956898 |
23 | 1034153511794063402519 |
24 | 21621325640846679627146 |
[1,1,2,5,16,65,326,1947,13410,104181,900214, 8566655,89055224,1004141647,12204369138, 159036267519,2211764983734,32696763676521, 511987792322430,8465194670035767, 147370831072230860,2694506417687396995, 51622643862824956898,1034153511794063402519, 21621325640846679627146] |