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A163274 as a simple table

na(n)
00
12
272
3648
43200
511250
631752
776832
8165888
9328050
10605000
111054152
121752192
132798978
144321800
156480000
169469952
1713530402
1818948168
1926064200
2035280000
2147064402
2261960712
2380594208
24103680000
25132031250
26166567752
27208324872

[0,2,72,648,3200,11250,31752,76832,165888,328050,
 605000,1054152,1752192,2798978,4321800,6480000,
 9469952,13530402,18948168,26064200,35280000,
 47064402,61960712,80594208,103680000,132031250,
 166567752,208324872]