n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 12 |
5 | 60 |
6 | 180 |
7 | 1260 |
8 | 2520 |
9 | 7560 |
10 | 37800 |
11 | 415800 |
12 | 1247400 |
13 | 16216200 |
14 | 113513400 |
15 | 567567000 |
16 | 1135134000 |
17 | 19297278000 |
18 | 57891834000 |
19 | 1099944846000 |
20 | 5499724230000 |
21 | 38498069610000 |
22 | 423478765710000 |
23 | 9740011611330000 |
[1,2,6,12,60,180,1260,2520,7560,37800,415800, 1247400,16216200,113513400,567567000,1135134000, 19297278000,57891834000,1099944846000, 5499724230000,38498069610000,423478765710000, 9740011611330000] |