A286963-组织环境信息系统

A286963型作为一个简单的表

n个	a（n）
0	1
1	1
2	6
三	7
4	20
5	15
6	88
7	47
8	272
9	31
10	2016
11	63
12	1600
13	8575
14	384
15	49407
16	3840
17	50687
18	431616
19	373759
20	721920
21	1062911
22	2308096
23	4476927
24	10022912
25	17686527
26	34758656
27	82264063
28	240107520
29	270499839
30	238256128
31	140836863
32	6443433984
33	4296933375
34	15554969600

[1,1,6,7,20,15,88,47,272,31,2016,63,1600,8575,384,49407,3840,50687,431616,373759,721920,1062911,2308096,4476927,10022912,17686527,34758656,82264063,240107520,270499839,238256128,140836863,6443433984,4296933375,15554969600]