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A159903 as a simple table

n a(n)
1 4
2 48
3 489
4 48912
5 4891216
6 489121618
7 48912161820
8 4891216182024
9 489121618202425
10 48912161820242527
11 4891216182024252728
12 489121618202425272832
13 48912161820242527283236 

[4,48,489,48912,4891216,489121618,48912161820,
 4891216182024,489121618202425,48912161820242527,
 4891216182024252728,489121618202425272832,
 48912161820242527283236]

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)