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A196811 as a simple table

na(n)
10
20
36
4144
5600
61992
74592
815616
931788
1074840
11122210
12251184
13384826
14647696
151085190
161616384
172308872
183449880
194783326
207052400
219253734
2212454640
2316453096
2422180992
2528552450
2636216544
2746089162
2858449104
2972061346
3091140000
31109813780
32135448576

[0,0,6,144,600,1992,4592,15616,31788,74840,122210,
 251184,384826,647696,1085190,1616384,2308872,
 3449880,4783326,7052400,9253734,12454640,16453096,
 22180992,28552450,36216544,46089162,58449104,
 72061346,91140000,109813780,135448576]