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A253680 as a simple table

na(n)
1204
22940
316296
457960
5159060
6368004
7754320
81412496
92465820
104070220
116418104
129742200
1314319396
1420474580
1528584480
1639081504
1752457580
1869267996
1990135240
20115752840
21146889204
22184391460
23229189296
24282298800
25344826300
26417972204
27503034840

[204,2940,16296,57960,159060,368004,754320,
 1412496,2465820,4070220,6418104,9742200,14319396,
 20474580,28584480,39081504,52457580,69267996,
 90135240,115752840,146889204,184391460,229189296,
 282298800,344826300,417972204,503034840]