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A103931 as a simple table

na(n)
11
24
336
4144
53600
6400
719600
878400
96350400
106350400
11768398400
12768398400
13129859329600
14129859329600
15129859329600
16519437318400
17150117385017600
1816679709446400
196021375110150400
20240855004406016
2126761667156224

[1,4,36,144,3600,400,19600,78400,6350400,6350400,
 768398400,768398400,129859329600,129859329600,
 129859329600,519437318400,150117385017600,
 16679709446400,6021375110150400,240855004406016,
 26761667156224]