A254183-组织环境信息系统

A254183号作为一个简单的表

n个	a（n）
1	2908
2	20380
三	140108
4	939056
5	5818936
6	35265504
7	211785820
8	1260109624
9	7470540196
10	44215816908
11	261411178044
12	1544642336052
13	9124484289564
14	53891218240836
15	318265182653360
16	1879488146032712
17	11098868593450092

[2908,20380,140108,939056,5818936,35265504,211785820,1260109624,7470540196,44215816908,261411178044,1544642336052,9124484289564,53891218240836,318265182653360,1879488146032712,11098868593450092]