n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 30 |
3 | 210 |
4 | 1260 |
5 | 6930 |
6 | 36036 |
7 | 180180 |
8 | 875160 |
9 | 4157010 |
10 | 19399380 |
11 | 89237148 |
12 | 405623400 |
13 | 1825305300 |
14 | 8143669800 |
15 | 36064823400 |
16 | 158685222960 |
17 | 694247850450 |
18 | 3022020054900 |
19 | 13095420237900 |
20 | 56517076816200 |
21 | 243023430309660 |
22 | 1041528987041400 |
[0,3,30,210,1260,6930,36036,180180,875160,4157010, 19399380,89237148,405623400,1825305300,8143669800, 36064823400,158685222960,694247850450, 3022020054900,13095420237900,56517076816200, 243023430309660,1041528987041400] |