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A007285 as a simple table

na(n)
31
44
57
68
717
821
929
1040
1151
1263
1374
1491
15104
16121
17134
18153
19164
20196
21212
22228
23244
24272
25288
26319
27332
28364
29396
30437
31464
32494
33524
34553
35578
36608
37642
38667
39692
40754
41816
42897
43959
441026
451066
461139
471190
481248
491306
501363

[1,4,7,8,17,21,29,40,51,63,74,91,104,121,134,153,
 164,196,212,228,244,272,288,319,332,364,396,437,
 464,494,524,553,578,608,642,667,692,754,816,897,
 959,1026,1066,1139,1190,1248,1306,1363]