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A304815 as a simple table

na(n)
02
113
222
333
443
553
663
772
883
992
10103
11112
12123
13133
14143
15153
16163
17173
18182
19193
20203
21213
22223
23233
24243
25253
26263
27272
28283
29292
30303
31313
32323
33333
34342
35353
36362
37373
38382
39393
40403
41413
42423
43432
44443
45452
46463
47472
48483
49493
50503
51513
52522
53533

[2,13,22,33,43,53,63,72,83,92,103,112,123,133,143,
 153,163,173,182,193,203,213,223,233,243,253,263,
 272,283,292,303,313,323,333,342,353,362,373,382,
 393,403,413,423,432,443,452,463,472,483,493,503,
 513,522,533]