A153758-OEIS公司

A153758号作为一张简单的桌子

n个	a（n）
1	1
2	三
三	7
4	17
5	57
6	337
7	3737
8	72657
9	2369257
10	127188257
11	11156500857
12	1592432891857
13	369041278550057
14	138668563737942657
15	84415532990575319257
16	83213455958038482903857
17	132788829902694935512664457
18	342962001904259249964245209057

[1,3,7,17,57,337,3737,72657,2369257,127188257,11156500857,1592432891857,369041278550057,138668563737942657,84415532990575319257,83213455958038482903857,132788829902694935512664457,342962001904259249964245209057]