login

A293050 as a simple table

na(n)
01
10
20
30
424
5120
6720
75040
860480
9725760
109072000
11119750400
121756339200
1328021593600
14479480601600
158717829120000
16168254102016000
173438311804928000
1874160828758016000
191682757222322176000
2040061786401308672000
21998402161605488640000

[1,0,0,0,24,120,720,5040,60480,725760,9072000,
 119750400,1756339200,28021593600,479480601600,
 8717829120000,168254102016000,3438311804928000,
 74160828758016000,1682757222322176000,
 40061786401308672000,998402161605488640000]