n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 8 |
4 | 66 |
5 | 512 |
6 | 5269 |
7 | 57459 |
8 | 711742 |
9 | 9610222 |
10 | 139735699 |
11 | 2183555015 |
12 | 36543300668 |
13 | 649320343729 |
14 | 12174674648730 |
15 | 240360451018461 |
16 | 4975239937954534 |
17 | 107600744797471150 |
18 | 2426579187889852885 |
19 | 56901290353169050995 |
20 | 1384258146777832889697 |
[1,1,1,8,66,512,5269,57459,711742,9610222, 139735699,2183555015,36543300668,649320343729, 12174674648730,240360451018461,4975239937954534, 107600744797471150,2426579187889852885, 56901290353169050995,1384258146777832889697] |