login

A189842 as a simple table

na(n)
11
22
36
424
5120
6720
74800
834752
9280512
102528256
1125282560
12278323200
133242649600
1440330371072
15536528954880
167633092132864

[1,2,6,24,120,720,4800,34752,280512,2528256,
 25282560,278323200,3242649600,40330371072,
 536528954880,7633092132864]