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A179956 as a simple table

n a(n)
1 1
2 21
3 121
4 1121
5 11121
6 111121
7 1111121
8 11111121
9 111111121
10 1111111121
11 11111111121
12 111111111121
13 1111111111121
14 11111111111121
15 111111111111121
16 1111111111111121
17 11111111111111121
18 111111111111111121
19 1111111111111111121
20 11111111111111111121 

[1,21,121,1121,11121,111121,1111121,11111121,
 111111121,1111111121,11111111121,111111111121,
 1111111111121,11111111111121,111111111111121,
 1111111111111121,11111111111111121,
 111111111111111121,1111111111111111121,
 11111111111111111121]

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)