n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 20 |
4 | 148 |
5 | 2208 |
6 | 67904 |
7 | 4264960 |
8 | 541216768 |
9 | 137984868352 |
10 | 70507295670272 |
11 | 72128242290524160 |
12 | 147646152060442771456 |
13 | 604610628447525580832768 |
14 | 4952364915780360673188380672 |
15 | 81134591384874923825347187179520 |
[1,2,5,20,148,2208,67904,4264960,541216768, 137984868352,70507295670272,72128242290524160, 147646152060442771456,604610628447525580832768, 4952364915780360673188380672, 81134591384874923825347187179520] |