n | a(n) |
---|---|
0 | 1 |
1 | 40 |
2 | 2464 |
3 | 229760 |
4 | 30633856 |
5 | 5561407488 |
6 | 1322489954304 |
7 | 399463775797248 |
8 | 149519094622027776 |
9 | 67960463478175825920 |
10 | 36884466463352967659520 |
11 | 23566236397584291201024000 |
12 | 17511732541318788803985408000 |
[1,40,2464,229760,30633856,5561407488, 1322489954304,399463775797248,149519094622027776, 67960463478175825920,36884466463352967659520, 23566236397584291201024000, 17511732541318788803985408000] |