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A075597 as a simple table

na(n)
13
2131
311311
43113111
5231131111
622311311119
73223113111199
8132231131111993
911322311311119931
107113223113111199313
11171132231131111993137
1231711322311311119931373
133317113223113111199313733

[3,131,11311,3113111,231131111,22311311119,
 3223113111199,132231131111993,11322311311119931,
 7113223113111199313,171132231131111993137,
 31711322311311119931373,3317113223113111199313733]