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A261324 as a simple table

na(n)
12
23
35
43
55
67
711
811
97
105
115
1211
1311
1411
1511
167
1713
1813
1913
2029
2129
227
237

[2,3,5,3,5,7,11,11,7,5,5,11,11,11,11,7,13,13,13,
 29,29,7,7]