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A100896 as a simple table

na(n)
03003
13113
23223
33333
43443
53553
63663
73773
83883
93993
10310103
11311113
12312123
13313133
14314143
15315153
16316163
17317173
18318183
19319193
20320203
21321213
22322223
23323233
24324243
25325253
26326263
27327273
28328283
29329293
30330303
31331313
32332323

[3003,3113,3223,3333,3443,3553,3663,3773,3883,
 3993,310103,311113,312123,313133,314143,315153,
 316163,317173,318183,319193,320203,321213,322223,
 323233,324243,325253,326263,327273,328283,329293,
 330303,331313,332323]