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A173806 as a simple table

n a(n)
1 1
2 71
3 771
4 7771
5 77771
6 777771
7 7777771
8 77777771
9 777777771
10 7777777771
11 77777777771
12 777777777771
13 7777777777771
14 77777777777771
15 777777777777771
16 7777777777777771
17 77777777777777771
18 777777777777777771

[1,71,771,7771,77771,777771,7777771,77777771,
 777777771,7777777771,77777777771,777777777771,
 7777777777771,77777777777771,777777777777771,
 7777777777777771,77777777777777771,
 777777777777777771]

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Last modified July 17 21:36 EDT 2019. Contains 325109 sequences. (Running on oeis4.)