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A187300 as a simple table

na(n)
10
20
390
4416
51208
62400
74092
86208
98766
1011752
1115166
1219008
1323278
1427976
1533102
1638656
1744638
1851048
1957886
2065152
2172846
2280968
2389518
2498496
25107902
26117736
27127998
28138688
29149806
30161352
31173326
32185728
33198558
34211816
35225502
36239616

[0,0,90,416,1208,2400,4092,6208,8766,11752,15166,
 19008,23278,27976,33102,38656,44638,51048,57886,
 65152,72846,80968,89518,98496,107902,117736,
 127998,138688,149806,161352,173326,185728,198558,
 211816,225502,239616]