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A047927 as a simple table

na(n)
20
36
448
5180
6480
71050
82016
93528
105760
118910
1213200
1318876
1426208
1535490
1647040
1761200
1878336
1998838
20123120
21151620
22184800
23223146
24267168
25317400
26374400
27438750
28511056
29591948
30682080
31782130
32892800
331014816
341148928
351295910
361456560
371631700
381822176

[0,6,48,180,480,1050,2016,3528,5760,8910,13200,
 18876,26208,35490,47040,61200,78336,98838,123120,
 151620,184800,223146,267168,317400,374400,438750,
 511056,591948,682080,782130,892800,1014816,
 1148928,1295910,1456560,1631700,1822176]