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A028724 as a simple table

na(n)
00
10
20
30
41
52
66
79
818
924
1040
1150
1275
1390
14126
15147
16196
17224
18288
19324
20405
21450
22550
23605
24726
25792
26936
271014
281183
291274
301470
311575
321800
331920
342176
352312
362601
372754
383078
393249
403610
413800
424200
434410
444851
455082
465566
475819
486348
496624
507200

[0,0,0,0,1,2,6,9,18,24,40,50,75,90,126,147,196,
 224,288,324,405,450,550,605,726,792,936,1014,1183,
 1274,1470,1575,1800,1920,2176,2312,2601,2754,3078,
 3249,3610,3800,4200,4410,4851,5082,5566,5819,6348,
 6624,7200]