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A319017 as a simple table

n a(n)
1 21347
2 2213347
3 2213447
4 21334447
5 21344447
6 21344777
7 22133477
8 213334477
9 221344477
10 2134444777
11 22133344447
12 221344477777
13 2133344447777
14 2133347777777
15 2213447777777
16 22133344447777
17 213344447777777
18 221333447777777
19 22133344447777777

[21347,2213347,2213447,21334447,21344447,21344777,
 22133477,213334477,221344477,2134444777,
 22133344447,221344477777,2133344447777,
 2133347777777,2213447777777,22133344447777,
 213344447777777,221333447777777,22133344447777777]

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)