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A186710 as a simple table

na(n)
25
37
417
511
65
729
817
919
1025
1123
1217
1353
14145
1561
16353
17137
185
19191
2041
2143
225
2347
2497
2511
26265
2719
28337
2959
3025
315953
32257
3367
345
3529
3617
37223
385
39157
4017
4183
42145
43173
4489
4519
465
47283
48353
4929
5012625
51307
5217
53107
545
55121
561921
57229
585
59709
60241
61367
625
63817
64769
65521
665
67269
68137
69139
70725
71853
7255969
73293
74745
7561
7617
7729
78265

[5,7,17,11,5,29,17,19,25,23,17,53,145,61,353,137,
 5,191,41,43,5,47,97,11,265,19,337,59,25,5953,257,
 67,5,29,17,223,5,157,17,83,145,173,89,19,5,283,
 353,29,12625,307,17,107,5,121,1921,229,5,709,241,
 367,5,817,769,521,5,269,137,139,725,853,55969,293,
 745,61,17,29,265]