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A261245 as a simple table

n a(n)
1 1
2 3
3 9
4 111
5 333
6 999
7 12321
8 36963
9 1001001
10 3003003
11 9009009
12 111111111
13 333333333
14 999999999
15 12333333321
16 36999999963
17 1002003002001
18 3006009006003
19 111222333222111
20 333666999666333
21 12345678987654321

[1,3,9,111,333,999,12321,36963,1001001,3003003,
 9009009,111111111,333333333,999999999,12333333321,
 36999999963,1002003002001,3006009006003,
 111222333222111,333666999666333,12345678987654321]

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Last modified May 9 04:49 EDT 2024. Contains 372341 sequences. (Running on oeis4.)