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A088288 as a simple table

n a(n)
1 131
2 191
3 313
4 919
5 113111311
6 131333131
7 313111313
8 331333133
9 11199199111
10 99911911999
11 1111191911111
12 9999919199999
13 133131131131331
14 311313313313113
15 777997999799777
16 999779777977999
17 11177771717777111

[131,191,313,919,113111311,131333131,313111313,
 331333133,11199199111,99911911999,1111191911111,
 9999919199999,133131131131331,311313313313113,
 777997999799777,999779777977999,11177771717777111]

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Last modified February 22 18:37 EST 2024. Contains 370260 sequences. (Running on oeis4.)