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A131363 as a simple table

n a(n)
1 1
2 11
3 12
4 21
5 31
6 41
7 51
8 61
9 71
10 81
11 91
12 102
13 112
14 120
15 121
16 122
17 123
18 132
19 192
20 213
21 231
22 312
23 321
24 412
25 421

[1,11,12,21,31,41,51,61,71,81,91,102,112,120,121,
 122,123,132,192,213,231,312,321,412,421]

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Last modified October 16 13:48 EDT 2021. Contains 348042 sequences. (Running on oeis4.)