n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 6 |
6 | 24 |
7 | 2520 |
8 | 18378360 |
9 | 6906955255200 |
10 | 5987137029832314231356979603166508647200 |
11 | 1000156941827668764767034398758639477404906113721462819980559968765060862592344000 |
[1,1,1,1,2,6,24,2520,18378360,6906955255200, 5987137029832314231356979603166508647200, 10001569418276687647670343987586394774049061137214\ 62819980559968765060862592344000] |