login

A167406 as a simple table

na(n)
10
24
364
42880
5208896
623193600
73640688640
8768126320640
9209688566169600
1071921062285148160
1130278182590480384000
1215350836256712740044800
139225766813653105691852800
146485670333458406942179328000
155272823572160895949091320627200

[0,4,64,2880,208896,23193600,3640688640,
 768126320640,209688566169600,71921062285148160,
 30278182590480384000,15350836256712740044800,
 9225766813653105691852800,
 6485670333458406942179328000,
 5272823572160895949091320627200]