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A364804 as a simple table

na(n)
11
21
31
41
5121
6121
72521
82521
9162121
10460801
1123553169
1223553169
13244068841
14913535283

[1,1,1,1,121,121,2521,2521,162121,460801,23553169,
 23553169,244068841,913535283]