A247292-组织环境信息系统

A247292号作为一张简单的桌子

n个	a（n）
0	1
1	1
2	2
三	4
4	8
5	16
6	1
7	35
8	2
9	77
10	5
11	172
12	13
13	391
14	32
15	899
16	78
17	1
18	2085
19	195
20	三
21	4877
22	487
23	9
24	11490
25	1217
26	28
27	27236
28	3055
29	81
30	64916
31	7687
32	228
33	1
34	155483
35	19374
36	641
37	4
38	374027
39	48925
40	1782
41	14
42	903286
43	123760
44	4908
45	50
46	2189219
47	313512
48	13451
49	165
50	5322965
51	795263
52	36690
53	522
54	1

[1,1,2,4,8,16,1,35,2,77,5,172,13,391,32,899,78,1,2085,195,3,4877,487,9,11490,1217,28,27236,3055,81,64916,7687,228,1,155483,19374,641,4,374027,48925,1782,14,903286,123760,4908,50,2189219,313512,13451,165,5322965,795263,36690,522,1]