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A087514 as a simple table

n a(n)
0 17
1 71
2 11171777
3 11177717
4 17111777
5 17171177
6 17171771
7 17177117
8 17711717
9 17717171
10 71117177
11 71171717
12 71717117
13 77111717
14 77711171
15 1111717777
16 1117117777
17 1117177177
18 1117771177
19 1117771717
20 1177117177
21 1177177711

[17,71,11171777,11177717,17111777,17171177,
 17171771,17177117,17711717,17717171,71117177,
 71171717,71717117,77111717,77711171,1111717777,
 1117117777,1117177177,1117771177,1117771717,
 1177117177,1177177711]

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Last modified June 12 14:48 EDT 2024. Contains 373331 sequences. (Running on oeis4.)