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A175364 as a simple table

na(n)
01
15
29
321
425
525
645
745
853
969
1077
1177
12101
13109
14117
15137
16149
17157
18157
19185
20193
21205
22213
23233
24257
25257
26265
27281
28305
29313
30329
31337
32361
33385
34393
35401
36409
37445
38453
39473
40481
41489
42525
43541
44549
45561
46577
47597
48621
49637
50653
51661
52665
53717
54725

[1,5,9,21,25,25,45,45,53,69,77,77,101,109,117,137,
 149,157,157,185,193,205,213,233,257,257,265,281,
 305,313,329,337,361,385,393,401,409,445,453,473,
 481,489,525,541,549,561,577,597,621,637,653,661,
 665,717,725]