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A242377 as a simple table

n a(n)
1 7
2 97
3 971
4 9719
5 97973
6 979717
7 9797371
8 97973731
9 979797979
10 9797979713
11 97979797171
12 979797973117
13 9797979797971
14 97979797973173
15 979797979797317
16 9797979797979719
17 97979797979797373
18 979797979797971179
19 9797979797979737971

[7,97,971,9719,97973,979717,9797371,97973731,
 979797979,9797979713,97979797171,979797973117,
 9797979797971,97979797973173,979797979797317,
 9797979797979719,97979797979797373,
 979797979797971179,9797979797979737971]

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Last modified April 19 06:16 EDT 2024. Contains 371782 sequences. (Running on oeis4.)