A002892-OEIS公司

A002892号作为一个简单的表

n个	a（n）
0	1
1	0
2	0
三	0
4	0
5	0
6	1
7	0
8	0
9	0
10	0
11	6
12	-6
13	0
14	0
15	8
16	42
17	-114
18	66
19	24
20	123
21	134
22	-1563
23	2262
24	-405
25	846
26	-2532
27	-15182
28	47961
29	-37992
30	8044
31	-59694
32	-57117
33	742394
34	-1233840
35	597456
36	-798392
37	1447162
38	7898736
39	-27134598
40	27649335

[1,0,0,0,0,0,1,0,0,0,0,6,-6,0,0,8,42,-114,66,24,123,134,-1563,2262,-405,846,-2532,-15182,47961,-37992,8044,-59694,-57117,742394,-1233840,597456,-798392,1447162,7898736,-27134598,27649335]