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A157478 as a simple table

na(n)
15
211
317
437
553
689
7107
8127
9179
10197
11223
12233
13257
14263
15401
16409
17421
18449
19457
20661

[5,11,17,37,53,89,107,127,179,197,223,233,257,263,
 401,409,421,449,457,661]