n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 66 |
4 | 300 |
5 | 8220 |
6 | 8820 |
7 | 457380 |
8 | 1917720 |
9 | 17965080 |
10 | 18600120 |
11 | 2320468920 |
12 | 2384502120 |
13 | 412970037480 |
14 | 422245703880 |
15 | 430902992520 |
16 | 1756076802480 |
17 | 516336630329520 |
18 | 524676485052720 |
19 | 192260441419366320 |
20 | 194970060218934000 |
21 | 197550649551855600 |
22 | 200013939369644400 |
[1,6,66,300,8220,8820,457380,1917720,17965080, 18600120,2320468920,2384502120,412970037480, 422245703880,430902992520,1756076802480, 516336630329520,524676485052720, 192260441419366320,194970060218934000, 197550649551855600,200013939369644400] |