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A139821 as a simple table

na(n)
11
21
32
42
52
63
73
85
93
104
115
128
139
144
155
168
1715
1815
1914
205
216
2213
2326
2431
2524
2620
276
287
2921
3046
3157
3254
3335
3427
357
368
3734
3880
39108
40104
4185
4248
4335
448
459
4655
47139
48199
49209
50170
51125
5263
5344
549
5510
5689
57240
58366
59404
60360
61258
62175
6380
6454
6510
6611

[1,1,2,2,2,3,3,5,3,4,5,8,9,4,5,8,15,15,14,5,6,13,
 26,31,24,20,6,7,21,46,57,54,35,27,7,8,34,80,108,
 104,85,48,35,8,9,55,139,199,209,170,125,63,44,9,
 10,89,240,366,404,360,258,175,80,54,10,11]