n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 4 |
5 | 19 |
6 | 107 |
7 | 849 |
8 | 11100 |
9 | 261058 |
10 | 11716404 |
11 | 1006700026 |
12 | 164059811497 |
13 | 50335907479783 |
14 | 29003487412533265 |
15 | 31397381139819043520 |
16 | 63969560111526659139866 |
17 | 245871831681641239553413008 |
18 | 1787331725248249110678608976294 |
19 | 24636021429399437942454151113206764 |
[0,0,1,4,19,107,849,11100,261058,11716404, 1006700026,164059811497,50335907479783, 29003487412533265,31397381139819043520, 63969560111526659139866, 245871831681641239553413008, 1787331725248249110678608976294, 24636021429399437942454151113206764] |