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A253091 as a simple table

n a(n)
0 1
1 12
2 111
3 1002
4 12021
5 111222
6 1001001
7 12012012
8 111111111
9 1000000002
10 12000000021
11 111000000222
12 1002000002001
13 12021000021012
14 111222000222111
15 1001001002002002
16 12012012021021021
17 111111111222222222
18 1000000001000000001
19 12000000012000000012
20 111000000111000000111

[1,12,111,1002,12021,111222,1001001,12012012,
 111111111,1000000002,12000000021,111000000222,
 1002000002001,12021000021012,111222000222111,
 1001001002002002,12012012021021021,
 111111111222222222,1000000001000000001,
 12000000012000000012,111000000111000000111]

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Last modified May 22 21:38 EDT 2024. Contains 372758 sequences. (Running on oeis4.)