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A137466 as a simple table

n a(n)
0 1
1 121
2 12121
3 1212121
4 121212121
5 12121212121
6 1212121212121
7 121212121212121
8 12121212121212121
9 1212121212121212121
10 121212121212121212121
11 12121212121212121212121
12 1212121212121212121212121
13 121212121212121212121212121
14 12121212121212121212121212121 

[1,121,12121,1212121,121212121,12121212121,
 1212121212121,121212121212121,12121212121212121,
 1212121212121212121,121212121212121212121,
 12121212121212121212121,1212121212121212121212121,
 121212121212121212121212121,
 12121212121212121212121212121]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)