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A265707 as a simple table

na(n)
11
21
33
41
55
67
71
89
919
1015
111
1217
1349
1465
1531
161
1733
18127
19225
20211
2163
221
2365
24337
25749
26961
27665
28127
291
30129
31919
322505
333991
343969
352059
36255
371
38257
392569
408525
4116201
4220237
4316129
446305
45511
461
47513
487327
4929625
5065911
5197713

[1,1,3,1,5,7,1,9,19,15,1,17,49,65,31,1,33,127,225,
 211,63,1,65,337,749,961,665,127,1,129,919,2505,
 3991,3969,2059,255,1,257,2569,8525,16201,20237,
 16129,6305,511,1,513,7327,29625,65911,97713]