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A265706 as a simple table

na(n)
11
23
31
47
55
61
715
819
99
101
1131
1265
1349
1417
151
1663
17211
18225
19127
2033
211
22127
23665
24961
25749
26337
2765
281
29255
302059
313969
323991
332505
34919
35129
361
37511
386305
3916129
4020237
4116201
428525
432569
44257
451
461023
4719171
4865025
49100087
5097713
5165911

[1,3,1,7,5,1,15,19,9,1,31,65,49,17,1,63,211,225,
 127,33,1,127,665,961,749,337,65,1,255,2059,3969,
 3991,2505,919,129,1,511,6305,16129,20237,16201,
 8525,2569,257,1,1023,19171,65025,100087,97713,
 65911]