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A020457 as a simple table

n a(n)
1 11
2 19
3 191
4 199
5 911
6 919
7 991
8 1999
9 9199
10 11119
11 19919
12 19991
13 91199
14 99119
15 99191
16 99991
17 111119
18 111191
19 111919
20 119191
21 191119
22 191911
23 191999
24 199999
25 911111
26 919111
27 991999
28 999199
29 1111991
30 1191119
31 1191191
32 1191199
33 1191991
34 1199999

[11,19,191,199,911,919,991,1999,9199,11119,19919,
 19991,91199,99119,99191,99991,111119,111191,
 111919,119191,191119,191911,191999,199999,911111,
 919111,991999,999199,1111991,1191119,1191191,
 1191199,1191991,1199999]

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Last modified May 19 14:54 EDT 2019. Contains 323395 sequences. (Running on oeis4.)