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A049852 as a simple table

n a(n)
1 12
2 23
3 35
4 45
5 57
6 67
7 711
8 811
9 911
10 1011
11 1113
12 1213
13 1317
14 1417
15 1517
16 1617
17 1719
18 1819
19 1923
20 2023
21 2123
22 2223
23 2329
24 2429
25 2529
26 2629
27 2729
28 2829
29 2931
30 3031
31 3137
32 3237
33 3337
34 3437
35 3537
36 3637
37 3741
38 3841
39 3941
40 4041
41 4143
42 4243

[12,23,35,45,57,67,711,811,911,1011,1113,1213,
 1317,1417,1517,1617,1719,1819,1923,2023,2123,2223,
 2329,2429,2529,2629,2729,2829,2931,3031,3137,3237,
 3337,3437,3537,3637,3741,3841,3941,4041,4143,4243]

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Last modified May 4 11:47 EDT 2024. Contains 372240 sequences. (Running on oeis4.)