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A113620 as a simple table

na(n)
121600
236000
348600
4121500
5169344
6225000
7337500
8395136
9857304
103000564
116690816
1219600000
1324532992
1437380096
1553782400
1659295096
1788942644
18122500000
19161980416
20171478296
21658834400
22774400000
23943130628
241022754816
252155524696
262344190625
274326400000

[21600,36000,48600,121500,169344,225000,337500,
 395136,857304,3000564,6690816,19600000,24532992,
 37380096,53782400,59295096,88942644,122500000,
 161980416,171478296,658834400,774400000,943130628,
 1022754816,2155524696,2344190625,4326400000]