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A030149 as a simple table

n a(n)
1 0
2 2
3 4
4 6
5 8
6 212
7 232
8 252
9 272
10 292
11 414
12 434
13 454
14 474
15 494
16 616
17 636
18 656
19 676
20 696
21 818
22 838
23 858
24 878
25 898
26 21012
27 21212
28 21412
29 21612
30 21812
31 23032
32 23232
33 23432
34 23632
35 23832
36 25052
37 25252
38 25452
39 25652
40 25852
41 27072
42 27272
43 27472

[0,2,4,6,8,212,232,252,272,292,414,434,454,474,
 494,616,636,656,676,696,818,838,858,878,898,21012,
 21212,21412,21612,21812,23032,23232,23432,23632,
 23832,25052,25252,25452,25652,25852,27072,27272,
 27472]

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Last modified July 4 05:07 EDT 2022. Contains 355064 sequences. (Running on oeis4.)