A126804-OEIS公司

A126804号作为一个简单的表

n个	a（n）
1	2
2	24
三	360
4	6720
5	151200
6	3991680
7	121080960
8	4151347200
9	158789030400
10	6704425728000
11	309744468633600
12	15543540607795200
13	841941782922240000
14	48962152914554880000
15	3042648073975910400000
16	201220459292273541120000
17	14110584707870682071040000

[2,24,360,6720,151200,3991680,121080960,4151347200,158789030400,6704425728000,309744468633600,15543540607795200,841941782922240000,48962152914554880000,3042648073975910400000,201220459292273541120000,14110584707870682071040000]