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A028839 as a simple table

na(n)
11
24
39
410
513
618
722
827
931
1036
1140
1245
1354
1463
1572
1679
1781
1888
1990
2097
21100
22103
23108
24112
25117
26121
27126
28130
29135
30144
31153
32162
33169
34171
35178
36180
37187
38196
39202
40207
41211
42216
43220
44225
45234
46243
47252
48259
49261
50268
51270
52277
53286
54295
55301
56306
57310

[1,4,9,10,13,18,22,27,31,36,40,45,54,63,72,79,81,
 88,90,97,100,103,108,112,117,121,126,130,135,144,
 153,162,169,171,178,180,187,196,202,207,211,216,
 220,225,234,243,252,259,261,268,270,277,286,295,
 301,306,310]