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A221155 as a simple table

n a(n)
0 1
1 1313
2 13133
3 131331313
4 13133131331311
5 13133131331311313113131
6 1313313133131131311313113133131331311
7 131331313313113131131311313313133131131311313113133131331313 

[1,1313,13133,131331313,13133131331311,
 13133131331311313113131,
 1313313133131131311313113133131331311,
 13133131331311313113131131331313313113131131311313\
 3131331313]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)