n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 12 |
4 | 15 |
5 | 70 |
6 | 840 |
7 | 1260 |
8 | 2772 |
9 | 30030 |
10 | 720720 |
11 | 765765 |
12 | 12932920 |
13 | 243374040 |
14 | 6692786100 |
15 | 40156716600 |
16 | 83181770100 |
17 | 2406725881560 |
18 | 144403552893600 |
19 | 148414762696200 |
20 | 5476504743489780 |
21 | 224275908542914800 |
[2,3,12,15,70,840,1260,2772,30030,720720,765765, 12932920,243374040,6692786100,40156716600, 83181770100,2406725881560,144403552893600, 148414762696200,5476504743489780, 224275908542914800] |