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A068576 as a simple table

na(n)
128
256
3153
4172
5173
6175
7176
8177
9178
10180
11181
12344
13351
14352
15353
16354
17356
18357
19361
20362
21363
22365
23366
24367
25368
26370
27371
28373
29374
30375
31383
32386
33391
34393
35394
36395
37396
38397
39400
40405
41408
42425
43428
44640
45752
46848
47849
48850
49851
50852
51853
52854

[28,56,153,172,173,175,176,177,178,180,181,344,
 351,352,353,354,356,357,361,362,363,365,366,367,
 368,370,371,373,374,375,383,386,391,393,394,395,
 396,397,400,405,408,425,428,640,752,848,849,850,
 851,852,853,854]