n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 6 |
3 | 30 |
4 | 210 |
5 | 2310 |
6 | 30030 |
7 | 510510 |
8 | 9699690 |
9 | 223092870 |
10 | 6469693230 |
11 | 200560490130 |
12 | 2153462358810 |
13 | 72490129383210 |
14 | 1958274892758030 |
15 | 58665460642891410 |
16 | 50035643372444730 |
17 | 19221664375883039070 |
18 | 1123712842678138983270 |
19 | 27456249893723439879090 |
20 | 350421246400567367415390 |
[0,2,6,30,210,2310,30030,510510,9699690,223092870, 6469693230,200560490130,2153462358810, 72490129383210,1958274892758030,58665460642891410, 50035643372444730,19221664375883039070, 1123712842678138983270,27456249893723439879090, 350421246400567367415390] |