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A187869 as a simple table

n a(n)
1 1
2 12
3 123
4 1234
5 14325
6 143256
7 1432567
8 12347658
9 123476589
10 12347658910
11 1234710985611
12 123471098561112
13 12347651211891013
14 1234761310981112514
15 123476131098111251415
16 12347651211815149101316
17 1234765121189101316151417
18 123476589101316151417121118

[1,12,123,1234,14325,143256,1432567,12347658,
 123476589,12347658910,1234710985611,
 123471098561112,12347651211891013,
 1234761310981112514,123476131098111251415,
 12347651211815149101316,1234765121189101316151417,
 123476589101316151417121118]

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Last modified April 18 14:32 EDT 2021. Contains 343088 sequences. (Running on oeis4.)