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A178002 as a simple table

n a(n)
1 7
2 47
3 449
4 4447
5 44449
6 444449
7 7444441
8 74444449
9 444444443
10 4444444447
11 44444444441
12 444444444443
13 5444444444443
14 84444444444449
15 494444444444441
16 8444444444444443
17 74444444444444441
18 494444444444444447

[7,47,449,4447,44449,444449,7444441,74444449,
 444444443,4444444447,44444444441,444444444443,
 5444444444443,84444444444449,494444444444441,
 8444444444444443,74444444444444441,
 494444444444444447]

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Last modified September 25 11:10 EDT 2022. Contains 356984 sequences. (Running on oeis4.)