A325201-OEIS公司

A325201型作为一个简单的表

n个	a（n）
1	0
2	0
三	0
4	0
5	1
6	0
7	0
8	1
9	2
10	0
11	0
12	1
13	2
14	6
15	0
16	0
17	1
18	2
19	9
20	24
21	0
22	0
23	1
24	2
25	9
26	60
27	120
28	0
29	0
30	1
31	2
32	9
33	64
34	540
35	720
36	0
37	0
38	1
39	2
40	9
41	64
42	620
43	6120
44	5040
45	0
46	0
47	1
48	2
49	9
50	64
51	625
52	7620
53	83790
54	40320
55	0
56	0
57	1
58	2
59	9
60	64
61	625
62	7770
63	113610
64	1345680
65	362880
66	0
67	0
68	1
69	2
70	9
71	64
72	625
73	7776
74	117390
75	1992480
76	24811920
77	3628800
78	0

[0,0,0,0,1,0,0,1,2,0,0,1,2,6,0,0,1,2,9,24,0,0,1,2,9,60,120,0,0,1,2,9,64,540,720,0,0,1,2,9,64,620,6120,5040,0,0,1,2,9,64,625,7620,83790,40320,0,0,1,2,9,64,625,7770,113610,1345680,362880,0,0,1,2,9,64,625,7776,117390,1992480,24811920,3628800,0]