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A018874 as a simple table

na(n)
00
11
28
318
44
59
62
73
821
946
1010
117
1233
1349
1423
155
1616
1711
1835
1924
2077
2136
2253
23115
2417
2537
268
2755
2881
2912
3026
31121
3283
33263
3418
3539
36124
3785
3827
39271
404
41127
4259
4387
44188
45189
466
4719
4813
4989
50131
5161
52132
539
5442
55133
5662
57134
58197
5929
6092
61292
6263
6343
642
65201
66137
67202
6864
69138

[0,1,8,18,4,9,2,3,21,46,10,7,33,49,23,5,16,11,35,
 24,77,36,53,115,17,37,8,55,81,12,26,121,83,263,18,
 39,124,85,27,271,4,127,59,87,188,189,6,19,13,89,
 131,61,132,9,42,133,62,134,197,29,92,292,63,43,2,
 201,137,202,64,138]