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A085927 as a simple table

na(n)
17
25
33
41
51
63
75
87
99
1077
1155
1233
1311
1411
1533
1655
1777
1899
19797
20777
21757
22737
23717
24717
25737
26757
27777
28797
29595
30575
31555
32535
33515
34515
35535
36555
37575
38595
39393
40373
41353
42333
43313
44313
45333
46353
47373
48393
49191
50171
51151
52131
53111
54111
55131
56151
57171
58191

[7,5,3,1,1,3,5,7,9,77,55,33,11,11,33,55,77,99,797,
 777,757,737,717,717,737,757,777,797,595,575,555,
 535,515,515,535,555,575,595,393,373,353,333,313,
 313,333,353,373,393,191,171,151,131,111,111,131,
 151,171,191]