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A096819 as a simple table

na(n)
15
27
311
415
519
621
731
839
967
1069
1185
12157
13171
14191
15255
16291
17379
183669
194551
209531
2113119
2214211
2320647
24233965
25337267
26534429
27535415
28816039
29991715

[5,7,11,15,19,21,31,39,67,69,85,157,171,191,255,
 291,379,3669,4551,9531,13119,14211,20647,233965,
 337267,534429,535415,816039,991715]