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A043012 as a simple table

n a(n)
1 3
2 21
3 111
4 117
5 123
6 129
7 135
8 141
9 651
10 693
11 735
12 777
13 819
14 861
15 3891
16 3927
17 3963
18 3999
19 4035
20 4071
21 4113
22 4149
23 4185
24 4221
25 4257
26 4293
27 4335
28 4371
29 4407
30 4443
31 4479
32 4515
33 4557
34 4593
35 4629
36 4665
37 4701
38 4737
39 4779
40 4815

[3,21,111,117,123,129,135,141,651,693,735,777,819,
 861,3891,3927,3963,3999,4035,4071,4113,4149,4185,
 4221,4257,4293,4335,4371,4407,4443,4479,4515,4557,
 4593,4629,4665,4701,4737,4779,4815]

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Last modified September 30 17:27 EDT 2022. Contains 357106 sequences. (Running on oeis4.)