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A033023 as a simple table

n a(n)
1 11
2 22
3 33
4 44
5 55
6 66
7 77
8 88
9 99
10 111
11 222
12 333
13 444
14 555
15 666
16 777
17 888
18 999
19 1100
20 1111
21 1122
22 1133
23 1144
24 1155
25 1166
26 1177
27 1188
28 1199
29 2200
30 2211
31 2222
32 2233
33 2244
34 2255
35 2266
36 2277
37 2288
38 2299
39 3300
40 3311
41 3322
42 3333

[11,22,33,44,55,66,77,88,99,111,222,333,444,555,
 666,777,888,999,1100,1111,1122,1133,1144,1155,
 1166,1177,1188,1199,2200,2211,2222,2233,2244,2255,
 2266,2277,2288,2299,3300,3311,3322,3333]

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Last modified April 9 20:55 EDT 2020. Contains 333363 sequences. (Running on oeis4.)