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A177690 as a simple table

na(n)
01
11
212
36
4120
5120
6280
7140
85040
95040
1055440
1155440
12720720
13720720
14720720
15360360
1624504480
1724504480
18155195040
19155195040
2031039008
2110346336
22237965728
23713897184
2417847429600
2517847429600
26160626866400
2722946695200

[1,1,12,6,120,120,280,140,5040,5040,55440,55440,
 720720,720720,720720,360360,24504480,24504480,
 155195040,155195040,31039008,10346336,237965728,
 713897184,17847429600,17847429600,160626866400,
 22946695200]