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A049872 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1111
12100
13101
14102
15103
16104
17105
18106
19107
20108
21109
22110
23111
24200
25201
26202
27203
28204
29205
30206
31207
32208
33209
34210
35211
36300
37301
38302
39303
40304
41305
42306
43307
44308
45309
46310
47311
48400
49401
50402
51403
52404
53405
54406
55407
56408
57409
58410
59411
60500

[0,1,2,3,4,5,6,7,8,9,10,11,100,101,102,103,104,
 105,106,107,108,109,110,111,200,201,202,203,204,
 205,206,207,208,209,210,211,300,301,302,303,304,
 305,306,307,308,309,310,311,400,401,402,403,404,
 405,406,407,408,409,410,411,500]