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A065581 as a simple table

n a(n)
1 7
2 277
3 1777
4 47777
5 2477777
6 16777777
7 137777777
8 577777777
9 1777777777
10 67777777777
11 377777777777
12 16777777777777
13 17777777777777
14 577777777777777
15 2777777777777777
16 157777777777777777

[7,277,1777,47777,2477777,16777777,137777777,
 577777777,1777777777,67777777777,377777777777,
 16777777777777,17777777777777,577777777777777,
 2777777777777777,157777777777777777]

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Last modified February 28 11:08 EST 2020. Contains 332323 sequences. (Running on oeis4.)