n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 13 |
6 | 35 |
7 | 96 |
8 | 264 |
9 | 720 |
10 | 1925 |
11 | 4966 |
12 | 12038 |
13 | 25907 |
14 | 41310 |
15 | -5168 |
16 | -468996 |
17 | -2982240 |
18 | -14350320 |
19 | -61334790 |
20 | -244951840 |
21 | -934684465 |
22 | -3447083370 |
23 | -12365767620 |
24 | -43304717625 |
25 | -148314737961 |
26 | -497033803314 |
27 | -1628721662260 |
28 | -5208556347700 |
[0,1,1,2,5,13,35,96,264,720,1925,4966,12038,25907, 41310,-5168,-468996,-2982240,-14350320,-61334790, -244951840,-934684465,-3447083370,-12365767620, -43304717625,-148314737961,-497033803314, -1628721662260,-5208556347700] |