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A086516 as a simple table

na(n)
12
23
37
43
511
629
717
87
911
1023
117
1253
1329
1431
153
16103
177
18191
1911
2043
2123
2247
237
2411
2553
267

[2,3,7,3,11,29,17,7,11,23,7,53,29,31,3,103,7,191,
 11,43,23,47,7,11,53,7]