n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 6 |
5 | 30 |
6 | 30 |
7 | 210 |
8 | 630 |
9 | 2310 |
10 | 2310 |
11 | 25410 |
12 | 25410 |
13 | 330330 |
14 | 330330 |
15 | 330330 |
16 | 690690 |
17 | 11741730 |
18 | 11741730 |
19 | 223092870 |
20 | 223092870 |
21 | 223092870 |
22 | 223092870 |
23 | 5131136010 |
24 | 5131136010 |
25 | 26548051530 |
26 | 26548051530 |
27 | 80090340330 |
28 | 80090340330 |
[0,0,0,6,30,30,210,630,2310,2310,25410,25410, 330330,330330,330330,690690,11741730,11741730, 223092870,223092870,223092870,223092870, 5131136010,5131136010,26548051530,26548051530, 80090340330,80090340330] |