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A236529 as a simple table

na(n)
15
253
35323
453231
5532313
65323139
7532313921
85323139219
9532313921921
1053231392192123
115323139219212343
1253231392192123433
135323139219212343323
1453231392192123433237
155323139219212343323721
16532313921921234332372189
1753231392192123433237218937
185323139219212343323721893721

[5,53,5323,53231,532313,5323139,532313921,
 5323139219,532313921921,53231392192123,
 5323139219212343,53231392192123433,
 5323139219212343323,53231392192123433237,
 5323139219212343323721,532313921921234332372189,
 53231392192123433237218937,
 5323139219212343323721893721]