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A027895 as a simple table

n a(n)
1 1
2 3
3 9
4 11
5 33
6 41
7 99
8 123
9 271
10 369
11 451
12 813
13 1353
14 2439
15 2981
16 4059
17 8943
18 9091
19 11111
20 26829
21 27273
22 33333
23 81819
24 99999
25 100001
26 122221
27 300003
28 366663
29 372731
30 900009
31 1099989
32 1118193
33 2463661
34 3354579
35 4100041
36 7390983
37 12300123
38 22172949

[1,3,9,11,33,41,99,123,271,369,451,813,1353,2439,
 2981,4059,8943,9091,11111,26829,27273,33333,81819,
 99999,100001,122221,300003,366663,372731,900009,
 1099989,1118193,2463661,3354579,4100041,7390983,
 12300123,22172949]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)