A104988-OEIS公司

A104988号作为一个简单的表

n个	a（n）
0	1
1	2
2	1
三	8
4	4
5	1
6	42
7	20
8	6
9	1
10	266
11	120
12	38
13	8
14	1
15	1954
16	836
17	270
18	62
19	10
20	1
21	16270
22	6616
23	2150
24	516
25	92
26	12
27	1
28	151218
29	58576
30	19030
31	4688
32	882
33	128
34	14
35	1
36	1551334
37	573672
38	185674
39	46516
40	9050
41	1392
42	170
43	16
44	1
45	17414114
46	6159976
47	1982310
48	502324
49	99994
50	15956
51	2070
52	218
53	18
54	1

[1,2,1,8,4,1,42,20,6,1,266,120,38,8,1,1954,836,270,62,10,1,16270,6616,2150,516,92,12,1,151218,58576,19030,4688,882,128,14,1,1551334,573672,185674,46516,9050,1392,170,16,1,17414114,6159976,1982310,502324,99994,15956,2070,218,18,1]