login

A162440 as a simple table

na(n)
22
316
4144
54608
6115200
74147200
8203212800
926011238400
102106910310400
11210691031040000
1225493614755840000
133671080524840960000
14620412608698122240000
15121600871304831959040000

[2,16,144,4608,115200,4147200,203212800,
 26011238400,2106910310400,210691031040000,
 25493614755840000,3671080524840960000,
 620412608698122240000,121600871304831959040000]