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A201017 as a simple table

na(n)
15
253
3151
4157
5359
6557
7571
8593
9751
10953
111151
121153
131511
141531
151553
161571
171579
181597
191759
203511
213533
225113
235153
245171
255179
265197
275333
285351
295531
305711
315791
327151
337159
347559
357577
367591
377757
387951
399157
4011351
4111579
4211593
4311597
4411953

[5,53,151,157,359,557,571,593,751,953,1151,1153,
 1511,1531,1553,1571,1579,1597,1759,3511,3533,5113,
 5153,5171,5179,5197,5333,5351,5531,5711,5791,7151,
 7159,7559,7577,7591,7757,7951,9157,11351,11579,
 11593,11597,11953]