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A121727 as a simple table

na(n)
15
213
317
425
541
629
737
861
965
1085
1153
12113
1365
14101
15145
1673
1785
1889
19181
20145
21221
2297
23125
24109
25197
26265
27149
28313
29257
30173
31137
32365
33185
34157
35325
36421
37229
38169
39481
40205
41185
42193
43401
44269
45545
46293

[5,13,17,25,41,29,37,61,65,85,53,113,65,101,145,
 73,85,89,181,145,221,97,125,109,197,265,149,313,
 257,173,137,365,185,157,325,421,229,169,481,205,
 185,193,401,269,545,293]